61620684 has 48 divisors (see below), whose sum is σ = 149538816. Its totient is φ = 19728000.

The previous prime is 61620649. The next prime is 61620701. The reversal of 61620684 is 48602616.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 55624 + ... + 56720.

It is an arithmetic number, because the mean of its divisors is an integer number (3115392).

Almost surely, 2^61620684 is an apocalyptic number.

It is an amenable number.

61620684 is an abundant number, since it is smaller than the sum of its proper divisors (87918132).

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

61620684 is a wasteful number, since it uses less digits than its factorization.

61620684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 61620684 is about 7849.8843303580. The cubic root of 61620684 is about 394.9803632817.

The spelling of 61620684 in words is "sixty-one million, six hundred twenty thousand, six hundred eighty-four".