61631344 has 20 divisors (see below), whose sum is σ = 122639224. Its totient is φ = 29982528.

The previous prime is 61631333. The next prime is 61631347. The reversal of 61631344 is 44313616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61631347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51462 + ... + 52645.

Almost surely, 2^61631344 is an apocalyptic number.

It is an amenable number.

61631344 is a deficient number, since it is larger than the sum of its proper divisors (61007880).

61631344 is a wasteful number, since it uses less digits than its factorization.

61631344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104152 (or 104146 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 61631344 is about 7850.5632918919. The cubic root of 61631344 is about 395.0031383610.

The spelling of 61631344 in words is "sixty-one million, six hundred thirty-one thousand, three hundred forty-four".