391674 has 16 divisors (see below), whose sum is σ = 810720. Its totient is φ = 126000.

The previous prime is 391661. The next prime is 391679. The reversal of 391674 is 476193.

It is a happy number.

391674 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (391679) by changing a digit.

391674 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952 + ... + 1299.

It is an arithmetic number, because the mean of its divisors is an integer number (50670).

2³⁹¹⁶⁷⁴ is an apocalyptic number.

391674 is an abundant number, since it is smaller than the sum of its proper divisors (419046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391674 is a wasteful number, since it uses less digits than its factorization.

391674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285.

The product of its digits is 4536, while the sum is 30.

The square root of 391674 is about 625.8386373499. The cubic root of 391674 is about 73.1658205864.

The spelling of 391674 in words is "three hundred ninety-one thousand, six hundred seventy-four".