21710674 has 4 divisors (see below), whose sum is σ = 32566014. Its totient is φ = 10855336.

The previous prime is 21710669. The next prime is 21710687. The reversal of 21710674 is 47601712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14010049 + 7700625 = 3743^2 + 2775^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5427667 + ... + 5427670.

Almost surely, 2^21710674 is an apocalyptic number.

21710674 is a deficient number, since it is larger than the sum of its proper divisors (10855340).

21710674 is a wasteful number, since it uses less digits than its factorization.

21710674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10855339.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 21710674 is about 4659.4714292503. The cubic root of 21710674 is about 278.9701710551.

The spelling of 21710674 in words is "twenty-one million, seven hundred ten thousand, six hundred seventy-four".