77149832 has 8 divisors (see below), whose sum is σ = 144655950. Its totient is φ = 38574912.

The previous prime is 77149817. The next prime is 77149837. The reversal of 77149832 is 23894177.

It can be written as a sum of positive squares in only one way, i.e., 39866596 + 37283236 = 6314^2 + 6106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 77149832.

It is not an unprimeable number, because it can be changed into a prime (77149837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821857 + ... + 4821872.

Almost surely, 2^77149832 is an apocalyptic number.

It is an amenable number.

77149832 is a deficient number, since it is larger than the sum of its proper divisors (67506118).

77149832 is a wasteful number, since it uses less digits than its factorization.

77149832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9643735 (or 9643731 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 77149832 is about 8783.4977087718. The cubic root of 77149832 is about 425.7078529167.

The spelling of 77149832 in words is "seventy-seven million, one hundred forty-nine thousand, eight hundred thirty-two".