20670339 has 8 divisors (see below), whose sum is σ = 27870480. Its totient is φ = 13625216.

The previous prime is 20670337. The next prime is 20670341. The reversal of 20670339 is 93307602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20670337) and next prime (20670341).

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 20670339 - 2¹ = 20670337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20670337) 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, 38442 + ... + 38975.

It is an arithmetic number, because the mean of its divisors is an integer number (3483810).

Almost surely, 2^20670339 is an apocalyptic number.

20670339 is a deficient number, since it is larger than the sum of its proper divisors (7200141).

20670339 is an equidigital number, since it uses as much as digits as its factorization.

20670339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77509.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 20670339 is about 4546.4644505374. The cubic root of 20670339 is about 274.4411305703.

The spelling of 20670339 in words is "twenty million, six hundred seventy thousand, three hundred thirty-nine".