320675749 has 16 divisors (see below), whose sum is σ = 349493760. Its totient is φ = 293112000.

The previous prime is 320675717. The next prime is 320675753. The reversal of 320675749 is 947576023.

It is a cyclic number.

It is not a de Polignac number, because 320675749 - 2⁵ = 320675717 is a prime.

It is a super-2 number, since 2×320675749² = 205665871993422002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320675759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270939 + ... + 272119.

It is an arithmetic number, because the mean of its divisors is an integer number (21843360).

Almost surely, 2^320675749 is an apocalyptic number.

It is an amenable number.

320675749 is a deficient number, since it is larger than the sum of its proper divisors (28818011).

320675749 is a wasteful number, since it uses less digits than its factorization.

320675749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 320675749 is about 17907.4216178656. The cubic root of 320675749 is about 684.4715045524.

The spelling of 320675749 in words is "three hundred twenty million, six hundred seventy-five thousand, seven hundred forty-nine".