77003998 has 16 divisors (see below), whose sum is σ = 122130000. Its totient is φ = 36312192.

The previous prime is 77003981. The next prime is 77004007. The reversal of 77003998 is 89930077.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4278 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (7633125).

Almost surely, 2^77003998 is an apocalyptic number.

77003998 is a deficient number, since it is larger than the sum of its proper divisors (45126002).

77003998 is a wasteful number, since it uses less digits than its factorization.

77003998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9099.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 77003998 is about 8775.1921916275. The cubic root of 77003998 is about 425.4394494901.

The spelling of 77003998 in words is "seventy-seven million, three thousand, nine hundred ninety-eight".