77999804 has 6 divisors (see below), whose sum is σ = 136499664. Its totient is φ = 38999900.

The previous prime is 77999773. The next prime is 77999809. The reversal of 77999804 is 40899977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77999809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9749972 + ... + 9749979.

It is an arithmetic number, because the mean of its divisors is an integer number (22749944).

Almost surely, 2^77999804 is an apocalyptic number.

It is an amenable number.

77999804 is a deficient number, since it is larger than the sum of its proper divisors (58499860).

77999804 is a wasteful number, since it uses less digits than its factorization.

77999804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19499955 (or 19499953 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 77999804 is about 8831.7497700059. The cubic root of 77999804 is about 427.2655102887.

The spelling of 77999804 in words is "seventy-seven million, nine hundred ninety-nine thousand, eight hundred four".