20653379 has 8 divisors (see below), whose sum is σ = 21848352. Its totient is φ = 19483200.

The previous prime is 20653357. The next prime is 20653387. The reversal of 20653379 is 97335602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20653379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20653309) 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, 4472 + ... + 7829.

It is an arithmetic number, because the mean of its divisors is an integer number (2731044).

Almost surely, 2^20653379 is an apocalyptic number.

20653379 is a deficient number, since it is larger than the sum of its proper divisors (1194973).

20653379 is a wasteful number, since it uses less digits than its factorization.

20653379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12397.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 20653379 is about 4544.5988821897. The cubic root of 20653379 is about 274.3660504412.

The spelling of 20653379 in words is "twenty million, six hundred fifty-three thousand, three hundred seventy-nine".