61364688 has 80 divisors (see below), whose sum is σ = 197654016. Its totient is φ = 15937920.

The previous prime is 61364669. The next prime is 61364701. The reversal of 61364688 is 88646316.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4606 + ... + 11997.

Almost surely, 2^61364688 is an apocalyptic number.

It is an amenable number.

61364688 is an abundant number, since it is smaller than the sum of its proper divisors (136289328).

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

61364688 is a wasteful number, since it uses less digits than its factorization.

61364688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16632 (or 16626 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 61364688 is about 7833.5616420630. The cubic root of 61364688 is about 394.4326373566.

The spelling of 61364688 in words is "sixty-one million, three hundred sixty-four thousand, six hundred eighty-eight".