61624444 has 12 divisors (see below), whose sum is σ = 123248944. Its totient is φ = 26410464.

The previous prime is 61624441. The next prime is 61624447. The reversal of 61624444 is 44442616.

61624444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61624441) and next prime (61624447).

61624444 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61624441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100409 + ... + 1100464.

Almost surely, 2^61624444 is an apocalyptic number.

It is an amenable number.

61624444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61624444 is a wasteful number, since it uses less digits than its factorization.

61624444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200884 (or 2200882 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 61624444 is about 7850.1238206795. The cubic root of 61624444 is about 394.9883968177.

The spelling of 61624444 in words is "sixty-one million, six hundred twenty-four thousand, four hundred forty-four".