77138468 has 36 divisors (see below), whose sum is σ = 151581696. Its totient is φ = 34306800.

The previous prime is 77138437. The next prime is 77138473. The reversal of 77138468 is 86483177.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21053 + ... + 24443.

Almost surely, 2^77138468 is an apocalyptic number.

It is an amenable number.

77138468 is a deficient number, since it is larger than the sum of its proper divisors (74443228).

77138468 is a wasteful number, since it uses less digits than its factorization.

77138468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464 (or 3451 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 77138468 is about 8782.8507900340. The cubic root of 77138468 is about 425.6869499479.

The spelling of 77138468 in words is "seventy-seven million, one hundred thirty-eight thousand, four hundred sixty-eight".