797028660 has 120 divisors (see below), whose sum is σ = 2609139456. Its totient is φ = 203290560.

The previous prime is 797028649. The next prime is 797028667. The reversal of 797028660 is 66820797.

It is a happy number.

It is a super-2 number, since 2×797028660² = 1270509369722791200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797028667) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26565 + ... + 47955.

Almost surely, 2^797028660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797028660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304569728).

797028660 is an abundant number, since it is smaller than the sum of its proper divisors (1812110796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797028660 is a wasteful number, since it uses less digits than its factorization.

797028660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435 (or 21424 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 797028660 is about 28231.6960170656. The cubic root of 797028660 is about 927.1670293174.

The spelling of 797028660 in words is "seven hundred ninety-seven million, twenty-eight thousand, six hundred sixty".