77801632 has 12 divisors (see below), whose sum is σ = 153172026. Its totient is φ = 38900800.

The previous prime is 77801629. The next prime is 77801671. The reversal of 77801632 is 23610877.

It can be written as a sum of positive squares in only one way, i.e., 52359696 + 25441936 = 7236^2 + 5044^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215619 + ... + 1215682.

Almost surely, 2^77801632 is an apocalyptic number.

It is an amenable number.

77801632 is a deficient number, since it is larger than the sum of its proper divisors (75370394).

77801632 is a wasteful number, since it uses less digits than its factorization.

77801632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431311 (or 2431303 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 77801632 is about 8820.5233404827. The cubic root of 77801632 is about 426.9033560876.

The spelling of 77801632 in words is "seventy-seven million, eight hundred one thousand, six hundred thirty-two".