20700801 has 18 divisors (see below), whose sum is σ = 32868290. Its totient is φ = 12545280.

The previous prime is 20700791. The next prime is 20700817. The reversal of 20700801 is 10800702.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 853776 = 4455^2 + 924^2 .

It is not a de Polignac number, because 20700801 - 2⁶ = 20700737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20700301) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8416 + ... + 10593.

Almost surely, 2^20700801 is an apocalyptic number.

It is an amenable number.

20700801 is a deficient number, since it is larger than the sum of its proper divisors (12167489).

20700801 is a wasteful number, since it uses less digits than its factorization.

20700801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19037 (or 19023 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 20700801 is about 4549.8132928726. The cubic root of 20700801 is about 274.5758795673.

Subtracting from 20700801 its reverse (10800702), we obtain a palindrome (9900099).

The spelling of 20700801 in words is "twenty million, seven hundred thousand, eight hundred one".