793165561 has 4 divisors (see below), whose sum is σ = 810041472. Its totient is φ = 776289652.

The previous prime is 793165547. The next prime is 793165567. The reversal of 793165561 is 165561397.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 793165561 - 2⁷ = 793165433 is a prime.

It is a super-2 number, since 2×793165561² = 1258223214312889442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (793165567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8437885 + ... + 8437978.

It is an arithmetic number, because the mean of its divisors is an integer number (202510368).

Almost surely, 2^793165561 is an apocalyptic number.

It is an amenable number.

793165561 is a deficient number, since it is larger than the sum of its proper divisors (16875911).

793165561 is a wasteful number, since it uses less digits than its factorization.

793165561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16875910.

The product of its digits is 170100, while the sum is 43.

The square root of 793165561 is about 28163.1951489883. The cubic root of 793165561 is about 925.6666481379. Note that the first 4 decimals are identical.

The spelling of 793165561 in words is "seven hundred ninety-three million, one hundred sixty-five thousand, five hundred sixty-one".