20614564 has 6 divisors (see below), whose sum is σ = 36075494. Its totient is φ = 10307280.

The previous prime is 20614547. The next prime is 20614567. The reversal of 20614564 is 46541602.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 5560164 = 3880^2 + 2358^2 .

It is not an unprimeable number, because it can be changed into a prime (20614567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2576817 + ... + 2576824.

Almost surely, 2^20614564 is an apocalyptic number.

It is an amenable number.

20614564 is a deficient number, since it is larger than the sum of its proper divisors (15460930).

20614564 is a wasteful number, since it uses less digits than its factorization.

20614564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153645 (or 5153643 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20614564 is about 4540.3264199835. The cubic root of 20614564 is about 274.1940657242.

The spelling of 20614564 in words is "twenty million, six hundred fourteen thousand, five hundred sixty-four".