320679491 has 8 divisors (see below), whose sum is σ = 358365168. Its totient is φ = 284416000.

The previous prime is 320679461. The next prime is 320679503. The reversal of 320679491 is 194976023.

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

It is not a de Polignac number, because 320679491 - 2¹⁰ = 320678467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320679431) 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, 355070 + ... + 355971.

It is an arithmetic number, because the mean of its divisors is an integer number (44795646).

Almost surely, 2^320679491 is an apocalyptic number.

320679491 is a deficient number, since it is larger than the sum of its proper divisors (37685677).

320679491 is a wasteful number, since it uses less digits than its factorization.

320679491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711093.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 320679491 is about 17907.5260993807. The cubic root of 320679491 is about 684.4741669327.

The spelling of 320679491 in words is "three hundred twenty million, six hundred seventy-nine thousand, four hundred ninety-one".