20870763 has 8 divisors (see below), whose sum is σ = 28506576. Its totient is φ = 13574400.

The previous prime is 20870753. The next prime is 20870777. The reversal of 20870763 is 36707802.

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

It is a de Polignac number, because none of the positive numbers 2^k-20870763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20870743) 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, 84718 + ... + 84963.

It is an arithmetic number, because the mean of its divisors is an integer number (3563322).

Almost surely, 2^20870763 is an apocalyptic number.

20870763 is a deficient number, since it is larger than the sum of its proper divisors (7635813).

20870763 is a wasteful number, since it uses less digits than its factorization.

20870763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169725.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20870763 is about 4568.4530204436. The cubic root of 20870763 is about 275.3252922014.

The spelling of 20870763 in words is "twenty million, eight hundred seventy thousand, seven hundred sixty-three".