20995077 has 8 divisors (see below), whose sum is σ = 28014880. Its totient is φ = 13986000.

The previous prime is 20995069. The next prime is 20995087. The reversal of 20995077 is 77059902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20995077 - 2³ = 20995069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20995087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5199 + ... + 8307.

It is an arithmetic number, because the mean of its divisors is an integer number (3501860).

Almost surely, 2^20995077 is an apocalyptic number.

It is an amenable number.

20995077 is a deficient number, since it is larger than the sum of its proper divisors (7019803).

20995077 is a wasteful number, since it uses less digits than its factorization.

20995077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 20995077 is about 4582.0385201349. The cubic root of 20995077 is about 275.8708569314.

The spelling of 20995077 in words is "twenty million, nine hundred ninety-five thousand, seventy-seven".