61793864 has 16 divisors (see below), whose sum is σ = 126396720. Its totient is φ = 28088080.

The previous prime is 61793807. The next prime is 61793869. The reversal of 61793864 is 46839716.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (61793869) 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, 351014 + ... + 351189.

It is an arithmetic number, because the mean of its divisors is an integer number (7899795).

Almost surely, 2^61793864 is an apocalyptic number.

It is an amenable number.

61793864 is an abundant number, since it is smaller than the sum of its proper divisors (64602856).

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

61793864 is a wasteful number, since it uses less digits than its factorization.

61793864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702220 (or 702216 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 61793864 is about 7860.9073267658. The cubic root of 61793864 is about 395.3500374162.

The spelling of 61793864 in words is "sixty-one million, seven hundred ninety-three thousand, eight hundred sixty-four".