634056649 has 16 divisors (see below), whose sum is σ = 662618880. Its totient is φ = 606228480.

The previous prime is 634056623. The next prime is 634056659. The reversal of 634056649 is 946650436.

It is a cyclic number.

It is not a de Polignac number, because 634056649 - 2¹⁷ = 633925577 is a prime.

It is a super-2 number, since 2×634056649² = 804055668282218402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634056659) 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, 824137 + ... + 824905.

It is an arithmetic number, because the mean of its divisors is an integer number (41413680).

Almost surely, 2^634056649 is an apocalyptic number.

It is an amenable number.

634056649 is a deficient number, since it is larger than the sum of its proper divisors (28562231).

634056649 is a wasteful number, since it uses less digits than its factorization.

634056649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 634056649 is about 25180.4815085018. The cubic root of 634056649 is about 859.0979585554.

The spelling of 634056649 in words is "six hundred thirty-four million, fifty-six thousand, six hundred forty-nine".