21700676 has 12 divisors (see below), whose sum is σ = 38031420. Its totient is φ = 10834560.

The previous prime is 21700673. The next prime is 21700703. The reversal of 21700676 is 67600712.

It can be written as a sum of positive squares in 2 ways, for example, as 4726276 + 16974400 = 2174^2 + 4120^2 .

It is not an unprimeable number, because it can be changed into a prime (21700673) 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, 521 + ... + 6608.

It is an arithmetic number, because the mean of its divisors is an integer number (3169285).

Almost surely, 2^21700676 is an apocalyptic number.

It is an amenable number.

21700676 is a deficient number, since it is larger than the sum of its proper divisors (16330744).

21700676 is a wasteful number, since it uses less digits than its factorization.

21700676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 7892 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 21700676 is about 4658.3984372314. The cubic root of 21700676 is about 278.9273415537.

The spelling of 21700676 in words is "twenty-one million, seven hundred thousand, six hundred seventy-six".