20770475 has 24 divisors (see below), whose sum is σ = 28712448. Its totient is φ = 14775200.

The previous prime is 20770459. The next prime is 20770489. The reversal of 20770475 is 57407702.

It is a happy number.

It is not a de Polignac number, because 20770475 - 2⁴ = 20770459 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12122 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (1196352).

Almost surely, 2^20770475 is an apocalyptic number.

20770475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20770475 is a deficient number, since it is larger than the sum of its proper divisors (7941973).

20770475 is a wasteful number, since it uses less digits than its factorization.

20770475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 20770475 is about 4557.4636586593. The cubic root of 20770475 is about 274.8835870907.

The spelling of 20770475 in words is "twenty million, seven hundred seventy thousand, four hundred seventy-five".