791667 has 16 divisors (see below), whose sum is σ = 1188000. Its totient is φ = 520992.

The previous prime is 791663. The next prime is 791677. The reversal of 791667 is 766197.

It is not a de Polignac number, because 791667 - 2² = 791663 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (791663) 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, 2809 + ... + 3077.

It is an arithmetic number, because the mean of its divisors is an integer number (74250).

2⁷⁹¹⁶⁶⁷ is an apocalyptic number.

791667 is a deficient number, since it is larger than the sum of its proper divisors (396333).

791667 is a wasteful number, since it uses less digits than its factorization.

791667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 791667 is about 889.7567083198. The cubic root of 791667 is about 92.5083313655.

The spelling of 791667 in words is "seven hundred ninety-one thousand, six hundred sixty-seven".