20764001 has 4 divisors (see below), whose sum is σ = 20793600. Its totient is φ = 20734404.

The previous prime is 20763991. The next prime is 20764039. The reversal of 20764001 is 10046702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20764001 - 2⁶ = 20763937 is a prime.

It is a super-2 number, since 2×20764001² = 862287475056002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20764091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13721 + ... + 15158.

It is an arithmetic number, because the mean of its divisors is an integer number (5198400).

Almost surely, 2^20764001 is an apocalyptic number.

It is an amenable number.

20764001 is a deficient number, since it is larger than the sum of its proper divisors (29599).

20764001 is an equidigital number, since it uses as much as digits as its factorization.

20764001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29598.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20764001 is about 4556.7533398243. The cubic root of 20764001 is about 274.8550244111.

The spelling of 20764001 in words is "twenty million, seven hundred sixty-four thousand, one".