77328612 has 36 divisors (see below), whose sum is σ = 197209740. Its totient is φ = 25546752.

The previous prime is 77328611. The next prime is 77328637. The reversal of 77328612 is 21682377.

77328612 is a `hidden beast` number, since 7 + 7 + 32 + 8 + 612 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28132416 + 49196196 = 5304^2 + 7014^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (77328611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5437 + ... + 13572.

Almost surely, 2^77328612 is an apocalyptic number.

It is an amenable number.

77328612 is an abundant number, since it is smaller than the sum of its proper divisors (119881128).

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

77328612 is a wasteful number, since it uses less digits than its factorization.

77328612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19132 (or 19127 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 77328612 is about 8793.6688589007. The cubic root of 77328612 is about 426.0364314542.

The spelling of 77328612 in words is "seventy-seven million, three hundred twenty-eight thousand, six hundred twelve".