799681497 has 4 divisors (see below), whose sum is σ = 1066242000. Its totient is φ = 533120996.

The previous prime is 799681489. The next prime is 799681537. The reversal of 799681497 is 794186997.

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 799681497 - 2³ = 799681489 is a prime.

It is a super-2 number, since 2×799681497² = 1278980993288322018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 799681497.

It is not an unprimeable number, because it can be changed into a prime (799681297) 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, 133280247 + ... + 133280252.

It is an arithmetic number, because the mean of its divisors is an integer number (266560500).

Almost surely, 2^799681497 is an apocalyptic number.

It is an amenable number.

799681497 is a deficient number, since it is larger than the sum of its proper divisors (266560503).

799681497 is a wasteful number, since it uses less digits than its factorization.

799681497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266560502.

The product of its digits is 6858432, while the sum is 60.

The square root of 799681497 is about 28278.6402961670. The cubic root of 799681497 is about 928.1945537055.

The spelling of 799681497 in words is "seven hundred ninety-nine million, six hundred eighty-one thousand, four hundred ninety-seven".