20880651 has 8 divisors (see below), whose sum is σ = 30371904. Its totient is φ = 12654920.

The previous prime is 20880647. The next prime is 20880659. The reversal of 20880651 is 15608802.

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

It is a cyclic number.

It is not a de Polignac number, because 20880651 - 2² = 20880647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20880659) 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, 316341 + ... + 316406.

It is an arithmetic number, because the mean of its divisors is an integer number (3796488).

Almost surely, 2^20880651 is an apocalyptic number.

20880651 is a deficient number, since it is larger than the sum of its proper divisors (9491253).

20880651 is a wasteful number, since it uses less digits than its factorization.

20880651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632761.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 20880651 is about 4569.5350967029. The cubic root of 20880651 is about 275.3687658822.

The spelling of 20880651 in words is "twenty million, eight hundred eighty thousand, six hundred fifty-one".