20637622 has 4 divisors (see below), whose sum is σ = 30956436. Its totient is φ = 10318810.

The previous prime is 20637619. The next prime is 20637679. The reversal of 20637622 is 22673602.

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

It is a super-2 number, since 2×20637622² = 851822883629768, 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 as a sum of consecutive naturals, namely, 5159404 + ... + 5159407.

It is an arithmetic number, because the mean of its divisors is an integer number (7739109).

Almost surely, 2^20637622 is an apocalyptic number.

20637622 is a deficient number, since it is larger than the sum of its proper divisors (10318814).

20637622 is a wasteful number, since it uses less digits than its factorization.

20637622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10318813.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20637622 is about 4542.8649550697. The cubic root of 20637622 is about 274.2962590244.

The spelling of 20637622 in words is "twenty million, six hundred thirty-seven thousand, six hundred twenty-two".