20764675 has 6 divisors (see below), whose sum is σ = 25748228. Its totient is φ = 16611720.

The previous prime is 20764673. The next prime is 20764703. The reversal of 20764675 is 57646702.

It is not a de Polignac number, because 20764675 - 2¹ = 20764673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20764673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415269 + ... + 415318.

Almost surely, 2^20764675 is an apocalyptic number.

20764675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20764675 is a deficient number, since it is larger than the sum of its proper divisors (4983553).

20764675 is an equidigital number, since it uses as much as digits as its factorization.

20764675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830597 (or 830592 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 20764675 is about 4556.8272953888. The cubic root of 20764675 is about 274.8579983126.

It can be divided in two parts, 207 and 64675, that multiplied together give a triangular number (13387725 = T₅₁₇₄).

The spelling of 20764675 in words is "twenty million, seven hundred sixty-four thousand, six hundred seventy-five".