18678676 has 12 divisors (see below), whose sum is σ = 32988340. Its totient is φ = 9253440.

The previous prime is 18678643. The next prime is 18678683. The reversal of 18678676 is 67687681.

It can be written as a sum of positive squares in 2 ways, for example, as 14976900 + 3701776 = 3870^2 + 1924^2 .

It is a super-2 number, since 2×18678676² = 697785874225952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20985 + ... + 21856.

Almost surely, 2^18678676 is an apocalyptic number.

It is an amenable number.

18678676 is a deficient number, since it is larger than the sum of its proper divisors (14309664).

18678676 is a wasteful number, since it uses less digits than its factorization.

18678676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42954 (or 42952 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 18678676 is about 4321.8833857475. The cubic root of 18678676 is about 265.3273562172.

The spelling of 18678676 in words is "eighteen million, six hundred seventy-eight thousand, six hundred seventy-six".