797900653 has 4 divisors (see below), whose sum is σ = 870437088. Its totient is φ = 725364220.

The previous prime is 797900651. The next prime is 797900681. The reversal of 797900653 is 356009797.

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 797900653 - 2¹ = 797900651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797900651) 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, 36268201 + ... + 36268222.

It is an arithmetic number, because the mean of its divisors is an integer number (217609272).

Almost surely, 2^797900653 is an apocalyptic number.

It is an amenable number.

797900653 is a deficient number, since it is larger than the sum of its proper divisors (72536435).

797900653 is a wasteful number, since it uses less digits than its factorization.

797900653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72536434.

The product of its (nonzero) digits is 357210, while the sum is 46.

The square root of 797900653 is about 28247.1353060802. The cubic root of 797900653 is about 927.5050299178.

The spelling of 797900653 in words is "seven hundred ninety-seven million, nine hundred thousand, six hundred fifty-three".