20597064 has 64 divisors (see below), whose sum is σ = 57412800. Its totient is φ = 6119424.

The previous prime is 20597041. The next prime is 20597069. The reversal of 20597064 is 46079502.

It is not an unprimeable number, because it can be changed into a prime (20597069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6424 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (897075).

Almost surely, 2^20597064 is an apocalyptic number.

20597064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20597064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28706400).

20597064 is an abundant number, since it is smaller than the sum of its proper divisors (36815736).

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

20597064 is a wasteful number, since it uses less digits than its factorization.

20597064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20597064 is about 4538.3988365942. The cubic root of 20597064 is about 274.1164546624.

The spelling of 20597064 in words is "twenty million, five hundred ninety-seven thousand, sixty-four".