76998859 has 4 divisors (see below), whose sum is σ = 87998704. Its totient is φ = 65999016.

The previous prime is 76998847. The next prime is 76998863. The reversal of 76998859 is 95889967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95889967 = 23 ⋅4169129.

It is a cyclic number.

It is not a de Polignac number, because 76998859 - 2¹⁵ = 76966091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76998797 and 76998806.

It is not an unprimeable number, because it can be changed into a prime (76998809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5499912 + ... + 5499925.

It is an arithmetic number, because the mean of its divisors is an integer number (21999676).

Almost surely, 2^76998859 is an apocalyptic number.

76998859 is a deficient number, since it is larger than the sum of its proper divisors (10999845).

76998859 is a wasteful number, since it uses less digits than its factorization.

76998859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10999844.

The product of its digits is 9797760, while the sum is 61.

The square root of 76998859 is about 8774.8993726424. The cubic root of 76998859 is about 425.4299851245.

The spelling of 76998859 in words is "seventy-six million, nine hundred ninety-eight thousand, eight hundred fifty-nine".