656060641 has 2 divisors, whose sum is σ = 656060642. Its totient is φ = 656060640.

The previous prime is 656060627. The next prime is 656060687. The reversal of 656060641 is 146060656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513974241 + 142086400 = 22671^2 + 11920^2 .

It is a cyclic number.

It is not a de Polignac number, because 656060641 - 2⁵ = 656060609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656060597 and 656060606.

It is not a weakly prime, because it can be changed into another prime (656061641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328030320 + 328030321.

It is an arithmetic number, because the mean of its divisors is an integer number (328030321).

Almost surely, 2^656060641 is an apocalyptic number.

It is an amenable number.

656060641 is a deficient number, since it is larger than the sum of its proper divisors (1).

656060641 is an equidigital number, since it uses as much as digits as its factorization.

656060641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 656060641 is about 25613.6807390113. The cubic root of 656060641 is about 868.9230700790.

The spelling of 656060641 in words is "six hundred fifty-six million, sixty thousand, six hundred forty-one".