76991103 has 18 divisors (see below), whose sum is σ = 129366744. Its totient is φ = 43994664.

The previous prime is 76991099. The next prime is 76991137. The reversal of 76991103 is 30119967.

It is not a de Polignac number, because 76991103 - 2² = 76991099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76991003) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86851 + ... + 87732.

Almost surely, 2^76991103 is an apocalyptic number.

76991103 is a deficient number, since it is larger than the sum of its proper divisors (52375641).

76991103 is a wasteful number, since it uses less digits than its factorization.

76991103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174603 (or 174593 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 76991103 is about 8774.4574191228. The cubic root of 76991103 is about 425.4157002991.

The spelling of 76991103 in words is "seventy-six million, nine hundred ninety-one thousand, one hundred three".