761381664 has 48 divisors (see below), whose sum is σ = 2000053440. Its totient is φ = 253612800.

The previous prime is 761381653. The next prime is 761381707. The reversal of 761381664 is 466183167.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243342 + ... + 246450.

It is an arithmetic number, because the mean of its divisors is an integer number (41667780).

Almost surely, 2^761381664 is an apocalyptic number.

It is an amenable number.

761381664 is an abundant number, since it is smaller than the sum of its proper divisors (1238671776).

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

761381664 is a wasteful number, since it uses less digits than its factorization.

761381664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673 (or 5665 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 761381664 is about 27593.1452357284. The cubic root of 761381664 is about 913.1332096861.

The spelling of 761381664 in words is "seven hundred sixty-one million, three hundred eighty-one thousand, six hundred sixty-four".