790790215 has 4 divisors (see below), whose sum is σ = 948948264. Its totient is φ = 632632168.

The previous prime is 790790197. The next prime is 790790243. The reversal of 790790215 is 512097097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512097097 = 1291 ⋅396667.

It is a cyclic number.

It is not a de Polignac number, because 790790215 - 2²⁵ = 757235783 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79079017 + ... + 79079026.

It is an arithmetic number, because the mean of its divisors is an integer number (237237066).

Almost surely, 2^790790215 is an apocalyptic number.

790790215 is a deficient number, since it is larger than the sum of its proper divisors (158158049).

790790215 is a wasteful number, since it uses less digits than its factorization.

790790215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158158048.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 790790215 is about 28120.9924255884. The cubic root of 790790215 is about 924.7416722016.

The spelling of 790790215 in words is "seven hundred ninety million, seven hundred ninety thousand, two hundred fifteen".