788664271 has 4 divisors (see below), whose sum is σ = 790178544. Its totient is φ = 787150000.

The previous prime is 788664259. The next prime is 788664281. The reversal of 788664271 is 172466887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172466887 = 17 ⋅10145111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788664271 is a prime.

It is a super-2 number, since 2×788664271² = 1243982664703922882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788664281) 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, 756355 + ... + 757396.

It is an arithmetic number, because the mean of its divisors is an integer number (197544636).

Almost surely, 2^788664271 is an apocalyptic number.

788664271 is a deficient number, since it is larger than the sum of its proper divisors (1514273).

788664271 is a wasteful number, since it uses less digits than its factorization.

788664271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514272.

The product of its digits is 903168, while the sum is 49.

The square root of 788664271 is about 28083.1670400616. The cubic root of 788664271 is about 923.9122430445.

The spelling of 788664271 in words is "seven hundred eighty-eight million, six hundred sixty-four thousand, two hundred seventy-one".