56649609 has 12 divisors (see below), whose sum is σ = 81974256. Its totient is φ = 37698552.

The previous prime is 56649599. The next prime is 56649611. The reversal of 56649609 is 90694665.

It is not a de Polignac number, because 56649609 - 2¹¹ = 56647561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56649629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (6831188).

Almost surely, 2^56649609 is an apocalyptic number.

It is an amenable number.

56649609 is a deficient number, since it is larger than the sum of its proper divisors (25324647).

56649609 is a wasteful number, since it uses less digits than its factorization.

56649609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316 (or 11313 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 56649609 is about 7526.5934525521. The cubic root of 56649609 is about 384.0599068320.

The spelling of 56649609 in words is "fifty-six million, six hundred forty-nine thousand, six hundred nine".