77158948 has 24 divisors (see below), whose sum is σ = 137434752. Its totient is φ = 37898304.

The previous prime is 77158933. The next prime is 77158957. The reversal of 77158948 is 84985177.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 55761 + ... + 57127.

It is an arithmetic number, because the mean of its divisors is an integer number (5726448).

Almost surely, 2^77158948 is an apocalyptic number.

It is an amenable number.

77158948 is a deficient number, since it is larger than the sum of its proper divisors (60275804).

77158948 is a wasteful number, since it uses less digits than its factorization.

77158948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The square root of 77158948 is about 8784.0166211136. The cubic root of 77158948 is about 425.7246194252.

The spelling of 77158948 in words is "seventy-seven million, one hundred fifty-eight thousand, nine hundred forty-eight".