656630049 has 16 divisors (see below), whose sum is σ = 932923008. Its totient is φ = 409373952.

The previous prime is 656630021. The next prime is 656630077. The reversal of 656630049 is 940036656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (656630021) and next prime (656630077).

It is not a de Polignac number, because 656630049 - 2¹¹ = 656628001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656629989 and 656630016.

It is not an unprimeable number, because it can be changed into a prime (656630089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32997 + ... + 49010.

It is an arithmetic number, because the mean of its divisors is an integer number (58307688).

Almost surely, 2^656630049 is an apocalyptic number.

It is an amenable number.

656630049 is a deficient number, since it is larger than the sum of its proper divisors (276292959).

656630049 is a wasteful number, since it uses less digits than its factorization.

656630049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82184.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 656630049 is about 25624.7936381935. The cubic root of 656630049 is about 869.1743825567.

The spelling of 656630049 in words is "six hundred fifty-six million, six hundred thirty thousand, forty-nine".