761866164 has 18 divisors (see below), whose sum is σ = 1925828450. Its totient is φ = 253955376.

The previous prime is 761866153. The next prime is 761866187. The reversal of 761866164 is 461668167.

It can be written as a sum of positive squares in only one way, i.e., 753502500 + 8363664 = 27450^2 + 2892^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10581439 + ... + 10581510.

Almost surely, 2^761866164 is an apocalyptic number.

It is an amenable number.

761866164 is an abundant number, since it is smaller than the sum of its proper divisors (1163962286).

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

761866164 is a wasteful number, since it uses less digits than its factorization.

761866164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21162959 (or 21162954 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 761866164 is about 27601.9231938646. The cubic root of 761866164 is about 913.3268573016.

The spelling of 761866164 in words is "seven hundred sixty-one million, eight hundred sixty-six thousand, one hundred sixty-four".