20797064 has 8 divisors (see below), whose sum is σ = 38994510. Its totient is φ = 10398528.

The previous prime is 20797057. The next prime is 20797109. The reversal of 20797064 is 46079702.

It can be written as a sum of positive squares in only one way, i.e., 10824100 + 9972964 = 3290^2 + 3158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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, 1299809 + ... + 1299824.

Almost surely, 2^20797064 is an apocalyptic number.

It is an amenable number.

20797064 is a deficient number, since it is larger than the sum of its proper divisors (18197446).

20797064 is a wasteful number, since it uses less digits than its factorization.

20797064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599639 (or 2599635 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20797064 is about 4560.3798087440. The cubic root of 20797064 is about 275.0008330553. Note that the first 3 decimals are identical.

The spelling of 20797064 in words is "twenty million, seven hundred ninety-seven thousand, sixty-four".