77813132 has 12 divisors (see below), whose sum is σ = 143340120. Its totient is φ = 36858816.

The previous prime is 77813129. The next prime is 77813143. The reversal of 77813132 is 23131877.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511853 + ... + 512004.

It is an arithmetic number, because the mean of its divisors is an integer number (11945010).

Almost surely, 2^77813132 is an apocalyptic number.

It is an amenable number.

77813132 is a deficient number, since it is larger than the sum of its proper divisors (65526988).

77813132 is a wasteful number, since it uses less digits than its factorization.

77813132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023880 (or 1023878 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 77813132 is about 8821.1752051527. The cubic root of 77813132 is about 426.9243888372.

The spelling of 77813132 in words is "seventy-seven million, eight hundred thirteen thousand, one hundred thirty-two".