797566 has 16 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 310680.

The previous prime is 797561. The next prime is 797567. The reversal of 797566 is 665797.

It is a super-2 number, since 2×797566² = 1272223048712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (93240).

2⁷⁹⁷⁵⁶⁶ is an apocalyptic number.

797566 is a deficient number, since it is larger than the sum of its proper divisors (694274).

797566 is a wasteful number, since it uses less digits than its factorization.

797566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199.

The product of its digits is 79380, while the sum is 40.

The square root of 797566 is about 893.0655071158. The cubic root of 797566 is about 92.7375341364.

Subtracting from 797566 its reverse (665797), we obtain a square (131769 = 363²).

The spelling of 797566 in words is "seven hundred ninety-seven thousand, five hundred sixty-six".