77776948 has 12 divisors (see below), whose sum is σ = 137431840. Its totient is φ = 38510712.

The previous prime is 77776943. The next prime is 77776987. The reversal of 77776948 is 84967777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77776943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93978 + ... + 94801.

Almost surely, 2^77776948 is an apocalyptic number.

It is an amenable number.

77776948 is a deficient number, since it is larger than the sum of its proper divisors (59654892).

77776948 is a wasteful number, since it uses less digits than its factorization.

77776948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188886 (or 188884 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 55.

The square root of 77776948 is about 8819.1239927784. The cubic root of 77776948 is about 426.8582036626.

The spelling of 77776948 in words is "seventy-seven million, seven hundred seventy-six thousand, nine hundred forty-eight".