623917271 has 4 divisors (see below), whose sum is σ = 634492200. Its totient is φ = 613342344.

The previous prime is 623917243. The next prime is 623917277. The reversal of 623917271 is 172719326.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 623917271 - 2¹⁸ = 623655127 is a prime.

It is a super-2 number, since 2×623917271² = 778545522104174882, 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 (623917277) 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, 5287376 + ... + 5287493.

It is an arithmetic number, because the mean of its divisors is an integer number (158623050).

Almost surely, 2^623917271 is an apocalyptic number.

623917271 is a deficient number, since it is larger than the sum of its proper divisors (10574929).

623917271 is a wasteful number, since it uses less digits than its factorization.

623917271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10574928.

The product of its digits is 31752, while the sum is 38.

The square root of 623917271 is about 24978.3360334511. The cubic root of 623917271 is about 854.4939704846.

The spelling of 623917271 in words is "six hundred twenty-three million, nine hundred seventeen thousand, two hundred seventy-one".