Search a number
-
+
7020649 is a prime number
BaseRepresentation
bin11010110010000001101001
3111012200112001
4122302001221
53244130044
6410251001
7113450236
oct32620151
914180461
107020649
113a65799
122426a61
1315ba73c
14d0a78d
1593a2d4
hex6b2069

7020649 has 2 divisors, whose sum is σ = 7020650. Its totient is φ = 7020648.

The previous prime is 7020647. The next prime is 7020667. The reversal of 7020649 is 9460207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 1545049 = 2340^2 + 1243^2 .

It is a cyclic number.

It is not a de Polignac number, because 7020649 - 21 = 7020647 is a prime.

Together with 7020647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7020641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510324 + 3510325.

It is an arithmetic number, because the mean of its divisors is an integer number (3510325).

Almost surely, 27020649 is an apocalyptic number.

It is an amenable number.

7020649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7020649 is an equidigital number, since it uses as much as digits as its factorization.

7020649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 7020649 is about 2649.6507317003. The cubic root of 7020649 is about 191.4810294183.

The spelling of 7020649 in words is "seven million, twenty thousand, six hundred forty-nine".