791515 has 4 divisors (see below), whose sum is σ = 949824. Its totient is φ = 633208.

The previous prime is 791489. The next prime is 791519. The reversal of 791515 is 515197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515197 = 677 ⋅761.

It is a cyclic number.

It is not a de Polignac number, because 791515 - 2⁷ = 791387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79147 + ... + 79156.

It is an arithmetic number, because the mean of its divisors is an integer number (237456).

2⁷⁹¹⁵¹⁵ is an apocalyptic number.

791515 is a deficient number, since it is larger than the sum of its proper divisors (158309).

791515 is a wasteful number, since it uses less digits than its factorization.

791515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158308.

The product of its digits is 1575, while the sum is 28.

The square root of 791515 is about 889.6712876113. The cubic root of 791515 is about 92.5024104558.

The spelling of 791515 in words is "seven hundred ninety-one thousand, five hundred fifteen".