57648649 has 16 divisors (see below), whose sum is σ = 65069568. Its totient is φ = 50778112.

The previous prime is 57648637. The next prime is 57648667. The reversal of 57648649 is 94684675.

It is not a de Polignac number, because 57648649 - 2¹⁵ = 57615881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57648049) 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, 16809 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (4066848).

Almost surely, 2^57648649 is an apocalyptic number.

It is an amenable number.

57648649 is a deficient number, since it is larger than the sum of its proper divisors (7420919).

57648649 is a wasteful number, since it uses less digits than its factorization.

57648649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224.

The product of its digits is 1451520, while the sum is 49.

The square root of 57648649 is about 7592.6707422356. The cubic root of 57648649 is about 386.3044503136.

The spelling of 57648649 in words is "fifty-seven million, six hundred forty-eight thousand, six hundred forty-nine".