20700074 has 4 divisors (see below), whose sum is σ = 31050114. Its totient is φ = 10350036.

The previous prime is 20700073. The next prime is 20700077. The reversal of 20700074 is 47000702.

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

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 4644025 = 4007^2 + 2155^2 .

It is not an unprimeable number, because it can be changed into a prime (20700073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5175017 + ... + 5175020.

Almost surely, 2^20700074 is an apocalyptic number.

20700074 is a deficient number, since it is larger than the sum of its proper divisors (10350040).

20700074 is a wasteful number, since it uses less digits than its factorization.

20700074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350039.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 20700074 is about 4549.7333987828. The cubic root of 20700074 is about 274.5726652150.

Adding to 20700074 its reverse (47000702), we get a palindrome (67700776).

The spelling of 20700074 in words is "twenty million, seven hundred thousand, seventy-four".