61390884 has 24 divisors (see below), whose sum is σ = 144639040. Its totient is φ = 20264544.

The previous prime is 61390873. The next prime is 61390891. The reversal of 61390884 is 48809316.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23599 + ... + 26070.

Almost surely, 2^61390884 is an apocalyptic number.

It is an amenable number.

61390884 is an abundant number, since it is smaller than the sum of its proper divisors (83248156).

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

61390884 is a wasteful number, since it uses less digits than its factorization.

61390884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49779 (or 49777 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 61390884 is about 7835.2335000305. The cubic root of 61390884 is about 394.4887558821.

The spelling of 61390884 in words is "sixty-one million, three hundred ninety thousand, eight hundred eighty-four".