61880764 has 48 divisors (see below), whose sum is σ = 125991936. Its totient is φ = 26312000.

The previous prime is 61880747. The next prime is 61880771. The reversal of 61880764 is 46708816.

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, 46914 + ... + 48214.

It is an arithmetic number, because the mean of its divisors is an integer number (2624832).

Almost surely, 2^61880764 is an apocalyptic number.

It is an amenable number.

61880764 is an abundant number, since it is smaller than the sum of its proper divisors (64111172).

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

61880764 is a wasteful number, since it uses less digits than its factorization.

61880764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 61880764 is about 7866.4327366348. The cubic root of 61880764 is about 395.5352760133.

The spelling of 61880764 in words is "sixty-one million, eight hundred eighty thousand, seven hundred sixty-four".