21674608 has 10 divisors (see below), whose sum is σ = 41994584. Its totient is φ = 10837296.

The previous prime is 21674591. The next prime is 21674617. The reversal of 21674608 is 80647612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677316 + ... + 677347.

Almost surely, 2^21674608 is an apocalyptic number.

It is an amenable number.

21674608 is a deficient number, since it is larger than the sum of its proper divisors (20319976).

21674608 is a wasteful number, since it uses less digits than its factorization.

21674608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354671 (or 1354665 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 21674608 is about 4655.5996391442. The cubic root of 21674608 is about 278.8156093762.

The spelling of 21674608 in words is "twenty-one million, six hundred seventy-four thousand, six hundred eight".