61384764 has 96 divisors (see below), whose sum is σ = 171601920. Its totient is φ = 16708608.

The previous prime is 61384733. The next prime is 61384777. The reversal of 61384764 is 46748316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275157 + ... + 275379.

It is an arithmetic number, because the mean of its divisors is an integer number (1787520).

Almost surely, 2^61384764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61384764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85800960).

61384764 is an abundant number, since it is smaller than the sum of its proper divisors (110217156).

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

61384764 is a wasteful number, since it uses less digits than its factorization.

61384764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 377 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 61384764 is about 7834.8429467348. The cubic root of 61384764 is about 394.4756467077.

The spelling of 61384764 in words is "sixty-one million, three hundred eighty-four thousand, seven hundred sixty-four".