20637064 has 32 divisors (see below), whose sum is σ = 44380800. Its totient is φ = 8812800.

The previous prime is 20637047. The next prime is 20637101. The reversal of 20637064 is 46073602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21997 + ... + 22915.

It is an arithmetic number, because the mean of its divisors is an integer number (1386900).

Almost surely, 2^20637064 is an apocalyptic number.

It is an amenable number.

20637064 is an abundant number, since it is smaller than the sum of its proper divisors (23743736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20637064 is a wasteful number, since it uses less digits than its factorization.

20637064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333 (or 1329 counting only the distinct ones).

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

The square root of 20637064 is about 4542.8035396658. The cubic root of 20637064 is about 274.2937868615.

The spelling of 20637064 in words is "twenty million, six hundred thirty-seven thousand, sixty-four".