20770995 has 32 divisors (see below), whose sum is σ = 38158848. Its totient is φ = 9451008.

The previous prime is 20770973. The next prime is 20771029. The reversal of 20770995 is 59907702.

It is not a de Polignac number, because 20770995 - 2⁵ = 20770963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35092 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (1192464).

Almost surely, 2^20770995 is an apocalyptic number.

20770995 is a deficient number, since it is larger than the sum of its proper divisors (17387853).

20770995 is a wasteful number, since it uses less digits than its factorization.

20770995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

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

The square root of 20770995 is about 4557.5207075778. The cubic root of 20770995 is about 274.8858810243.

The spelling of 20770995 in words is "twenty million, seven hundred seventy thousand, nine hundred ninety-five".