20876697 has 20 divisors (see below), whose sum is σ = 33022836. Its totient is φ = 13098240.

The previous prime is 20876693. The next prime is 20876699. The reversal of 20876697 is 79667802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14017536 + 6859161 = 3744^2 + 2619^2 .

It is not a de Polignac number, because 20876697 - 2² = 20876693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20876693) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6204 + ... + 8957.

Almost surely, 2^20876697 is an apocalyptic number.

20876697 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20876697 is a deficient number, since it is larger than the sum of its proper divisors (12146139).

20876697 is a wasteful number, since it uses less digits than its factorization.

20876697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15190 (or 15181 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 20876697 is about 4569.1024282675. The cubic root of 20876697 is about 275.3513833329.

The spelling of 20876697 in words is "twenty million, eight hundred seventy-six thousand, six hundred ninety-seven".