656930423 has 2 divisors, whose sum is σ = 656930424. Its totient is φ = 656930422.

The previous prime is 656930419. The next prime is 656930429. The reversal of 656930423 is 324039656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656930423 - 2² = 656930419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656930429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328465211 + 328465212.

It is an arithmetic number, because the mean of its divisors is an integer number (328465212).

Almost surely, 2^656930423 is an apocalyptic number.

656930423 is a deficient number, since it is larger than the sum of its proper divisors (1).

656930423 is an equidigital number, since it uses as much as digits as its factorization.

656930423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 656930423 is about 25630.6539713680. The cubic root of 656930423 is about 869.3068963351.

The spelling of 656930423 in words is "six hundred fifty-six million, nine hundred thirty thousand, four hundred twenty-three".