77773668 has 48 divisors (see below), whose sum is σ = 214093824. Its totient is φ = 21503520.

The previous prime is 77773643. The next prime is 77773681. The reversal of 77773668 is 86637777.

It is a self number, because there is not a number n which added to its sum of digits gives 77773668.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12330 + ... + 17537.

It is an arithmetic number, because the mean of its divisors is an integer number (4460288).

Almost surely, 2^77773668 is an apocalyptic number.

It is an amenable number.

77773668 is an abundant number, since it is smaller than the sum of its proper divisors (136320156).

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

77773668 is a wasteful number, since it uses less digits than its factorization.

77773668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29912 (or 29910 counting only the distinct ones).

The product of its digits is 2074464, while the sum is 51.

The square root of 77773668 is about 8818.9380313051. The cubic root of 77773668 is about 426.8522031075.

The spelling of 77773668 in words is "seventy-seven million, seven hundred seventy-three thousand, six hundred sixty-eight".