20662612 has 6 divisors (see below), whose sum is σ = 36159578. Its totient is φ = 10331304.

The previous prime is 20662589. The next prime is 20662619. The reversal of 20662612 is 21626602.

It can be written as a sum of positive squares in only one way, i.e., 17690436 + 2972176 = 4206^2 + 1724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20662619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582823 + ... + 2582830.

Almost surely, 2^20662612 is an apocalyptic number.

It is an amenable number.

20662612 is a deficient number, since it is larger than the sum of its proper divisors (15496966).

20662612 is a wasteful number, since it uses less digits than its factorization.

20662612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165657 (or 5165655 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20662612 is about 4545.6145899097. The cubic root of 20662612 is about 274.4069290524.

The spelling of 20662612 in words is "twenty million, six hundred sixty-two thousand, six hundred twelve".