20375679 has 8 divisors (see below), whose sum is σ = 27799552. Its totient is φ = 13267800.

The previous prime is 20375633. The next prime is 20375699. The reversal of 20375679 is 97657302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20375679 - 2⁸ = 20375423 is a prime.

It is a super-2 number, since 2×20375679² = 830336589422082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375699) 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, 78847 + ... + 79104.

It is an arithmetic number, because the mean of its divisors is an integer number (3474944).

Almost surely, 2^20375679 is an apocalyptic number.

20375679 is a deficient number, since it is larger than the sum of its proper divisors (7423873).

20375679 is a wasteful number, since it uses less digits than its factorization.

20375679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157997.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 20375679 is about 4513.9427333541. The cubic root of 20375679 is about 273.1308125387.

The spelling of 20375679 in words is "twenty million, three hundred seventy-five thousand, six hundred seventy-nine".