791906 has 4 divisors (see below), whose sum is σ = 1187862. Its totient is φ = 395952.

The previous prime is 791899. The next prime is 791909. The reversal of 791906 is 609197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609197 = 19 ⋅32063.

It can be written as a sum of positive squares in only one way, i.e., 748225 + 43681 = 865^2 + 209^2 .

It is a super-2 number, since 2×791906² = 1254230225672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (791909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197975 + ... + 197978.

2⁷⁹¹⁹⁰⁶ is an apocalyptic number.

791906 is a deficient number, since it is larger than the sum of its proper divisors (395956).

791906 is a wasteful number, since it uses less digits than its factorization.

791906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395955.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 791906 is about 889.8910045618. The cubic root of 791906 is about 92.5176396844.

The spelling of 791906 in words is "seven hundred ninety-one thousand, nine hundred six".