76998861 has 24 divisors (see below), whose sum is σ = 115577280. Its totient is φ = 49358400.

The previous prime is 76998847. The next prime is 76998863. The reversal of 76998861 is 16889967.

It is not a de Polignac number, because 76998861 - 2¹¹ = 76996813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76998798 and 76998807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76998863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24730 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^76998861 is an apocalyptic number.

76998861 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

76998861 is a deficient number, since it is larger than the sum of its proper divisors (38578419).

76998861 is a wasteful number, since it uses less digits than its factorization.

76998861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057 (or 3054 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 76998861 is about 8774.8994866038. The cubic root of 76998861 is about 425.4299888079.

The spelling of 76998861 in words is "seventy-six million, nine hundred ninety-eight thousand, eight hundred sixty-one".