61044664 has 16 divisors (see below), whose sum is σ = 116071920. Its totient is φ = 30092160.

The previous prime is 61044661. The next prime is 61044727. The reversal of 61044664 is 46644016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61044661) 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, 53169 + ... + 54304.

It is an arithmetic number, because the mean of its divisors is an integer number (7254495).

Almost surely, 2^61044664 is an apocalyptic number.

It is an amenable number.

61044664 is a deficient number, since it is larger than the sum of its proper divisors (55027256).

61044664 is a wasteful number, since it uses less digits than its factorization.

61044664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107550 (or 107546 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 61044664 is about 7813.1084723047. The cubic root of 61044664 is about 393.7457712152.

The spelling of 61044664 in words is "sixty-one million, forty-four thousand, six hundred sixty-four".