Search a number
-
+
770420801 is a prime number
BaseRepresentation
bin101101111010111…
…011000001000001
31222200200102122202
4231322323001001
53034211431201
6204240442545
725043316533
oct5572730101
91880612582
10770420801
11365978607
12196019455
13c37c75c7
1474469853
1547982c6b
hex2debb041

770420801 has 2 divisors, whose sum is σ = 770420802. Its totient is φ = 770420800.

The previous prime is 770420753. The next prime is 770420803. The reversal of 770420801 is 108024077.

770420801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764467201 + 5953600 = 27649^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 770420801 - 26 = 770420737 is a prime.

It is a super-2 number, since 2×7704208012 = 1187096421226963202, which contains 22 as substring.

Together with 770420803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (770420803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385210400 + 385210401.

It is an arithmetic number, because the mean of its divisors is an integer number (385210401).

Almost surely, 2770420801 is an apocalyptic number.

It is an amenable number.

770420801 is a deficient number, since it is larger than the sum of its proper divisors (1).

770420801 is an equidigital number, since it uses as much as digits as its factorization.

770420801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 770420801 is about 27756.4551230880. The cubic root of 770420801 is about 916.7325811482.

Adding to 770420801 its reverse (108024077), we get a palindrome (878444878).

The spelling of 770420801 in words is "seven hundred seventy million, four hundred twenty thousand, eight hundred one".