656049697 has 2 divisors, whose sum is σ = 656049698. Its totient is φ = 656049696.

The previous prime is 656049659. The next prime is 656049731. The reversal of 656049697 is 796940656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617224336 + 38825361 = 24844^2 + 6231^2 .

It is a cyclic number.

It is not a de Polignac number, because 656049697 - 2¹¹ = 656047649 is a prime.

It is not a weakly prime, because it can be changed into another prime (656049607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328024848 + 328024849.

It is an arithmetic number, because the mean of its divisors is an integer number (328024849).

Almost surely, 2^656049697 is an apocalyptic number.

It is an amenable number.

656049697 is a deficient number, since it is larger than the sum of its proper divisors (1).

656049697 is an equidigital number, since it uses as much as digits as its factorization.

656049697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 656049697 is about 25613.4671022882. The cubic root of 656049697 is about 868.9182384387.

The spelling of 656049697 in words is "six hundred fifty-six million, forty-nine thousand, six hundred ninety-seven".