57631646 has 4 divisors (see below), whose sum is σ = 86447472. Its totient is φ = 28815822.

The previous prime is 57631643. The next prime is 57631657. The reversal of 57631646 is 64613675.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57631643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14407910 + ... + 14407913.

It is an arithmetic number, because the mean of its divisors is an integer number (21611868).

Almost surely, 2^57631646 is an apocalyptic number.

57631646 is a deficient number, since it is larger than the sum of its proper divisors (28815826).

57631646 is a wasteful number, since it uses less digits than its factorization.

57631646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28815825.

The product of its digits is 90720, while the sum is 38.

The square root of 57631646 is about 7591.5509614307. The cubic root of 57631646 is about 386.2664674609.

The spelling of 57631646 in words is "fifty-seven million, six hundred thirty-one thousand, six hundred forty-six".