Search a number
-
+
64020801 = 3131641559
BaseRepresentation
bin1111010000111…
…0000101000001
311110110121000210
43310032011001
5112342131201
610204104333
71405111365
oct364160501
9143417023
1064020801
1133157859
12195350a9
1310357140
1487072a5
1559491d6
hex3d0e141

64020801 has 8 divisors (see below), whose sum is σ = 91927360. Its totient is φ = 39397392.

The previous prime is 64020787. The next prime is 64020809. The reversal of 64020801 is 10802046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64020801 - 214 = 64004417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64020809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820741 + ... + 820818.

It is an arithmetic number, because the mean of its divisors is an integer number (11490920).

Almost surely, 264020801 is an apocalyptic number.

It is an amenable number.

64020801 is a deficient number, since it is larger than the sum of its proper divisors (27906559).

64020801 is a wasteful number, since it uses less digits than its factorization.

64020801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641575.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 64020801 is about 8001.2999568820. The cubic root of 64020801 is about 400.0433307226.

Adding to 64020801 its reverse (10802046), we get a palindrome (74822847).

The spelling of 64020801 in words is "sixty-four million, twenty thousand, eight hundred one".

Divisors: 1 3 13 39 1641559 4924677 21340267 64020801