766638132 has 48 divisors (see below), whose sum is σ = 1949666880. Its totient is φ = 233042688.

The previous prime is 766638101. The next prime is 766638157. The reversal of 766638132 is 231836667.

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, 16657 + ... + 42552.

It is an arithmetic number, because the mean of its divisors is an integer number (40618060).

Almost surely, 2^766638132 is an apocalyptic number.

It is an amenable number.

766638132 is an abundant number, since it is smaller than the sum of its proper divisors (1183028748).

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

766638132 is a wasteful number, since it uses less digits than its factorization.

766638132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59312 (or 59310 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 766638132 is about 27688.2309294039. The cubic root of 766638132 is about 915.2297717919.

The spelling of 766638132 in words is "seven hundred sixty-six million, six hundred thirty-eight thousand, one hundred thirty-two".