656049307 has 2 divisors, whose sum is σ = 656049308. Its totient is φ = 656049306.

The previous prime is 656049299. The next prime is 656049337. The reversal of 656049307 is 703940656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656049307 - 2³ = 656049299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656049307.

It is not a weakly prime, because it can be changed into another prime (656049337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328024653 + 328024654.

It is an arithmetic number, because the mean of its divisors is an integer number (328024654).

Almost surely, 2^656049307 is an apocalyptic number.

656049307 is a deficient number, since it is larger than the sum of its proper divisors (1).

656049307 is an equidigital number, since it uses as much as digits as its factorization.

656049307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 656049307 is about 25613.4594891046. The cubic root of 656049307 is about 868.9180662576.

The spelling of 656049307 in words is "six hundred fifty-six million, forty-nine thousand, three hundred seven".