656049667 has 32 divisors (see below), whose sum is σ = 830269440. Its totient is φ = 504524160.

The previous prime is 656049659. The next prime is 656049697. The reversal of 656049667 is 766940656.

It is not a de Polignac number, because 656049667 - 2³ = 656049659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656049667.

It is not an unprimeable number, because it can be changed into a prime (656049607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1521942 + ... + 1522372.

It is an arithmetic number, because the mean of its divisors is an integer number (25945920).

Almost surely, 2^656049667 is an apocalyptic number.

656049667 is a deficient number, since it is larger than the sum of its proper divisors (174219773).

656049667 is a wasteful number, since it uses less digits than its factorization.

656049667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 656049667 is about 25613.4665166588. The cubic root of 656049667 is about 868.9182251940.

The spelling of 656049667 in words is "six hundred fifty-six million, forty-nine thousand, six hundred sixty-seven".