220672379 has 4 divisors (see below), whose sum is σ = 225367584. Its totient is φ = 215977176.

The previous prime is 220672343. The next prime is 220672409. The reversal of 220672379 is 973276022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973276022 = 2 ⋅486638011.

It is a cyclic number.

It is not a de Polignac number, because 220672379 - 2²⁴ = 203895163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220672579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2347532 + ... + 2347625.

It is an arithmetic number, because the mean of its divisors is an integer number (56341896).

Almost surely, 2^220672379 is an apocalyptic number.

220672379 is a deficient number, since it is larger than the sum of its proper divisors (4695205).

220672379 is an equidigital number, since it uses as much as digits as its factorization.

220672379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695204.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 220672379 is about 14855.0455738109. The cubic root of 220672379 is about 604.2954519551.

The spelling of 220672379 in words is "two hundred twenty million, six hundred seventy-two thousand, three hundred seventy-nine".