20764670 has 16 divisors (see below), whose sum is σ = 37434528. Its totient is φ = 8292960.

The previous prime is 20764651. The next prime is 20764673. The reversal of 20764670 is 7646702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20764673) 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, 7700 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (2339658).

Almost surely, 2^20764670 is an apocalyptic number.

20764670 is a deficient number, since it is larger than the sum of its proper divisors (16669858).

20764670 is a wasteful number, since it uses less digits than its factorization.

20764670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20764670 is about 4556.8267467614. The cubic root of 20764670 is about 274.8579762512.

The spelling of 20764670 in words is "twenty million, seven hundred sixty-four thousand, six hundred seventy".