717274945 has 16 divisors (see below), whose sum is σ = 869515920. Its totient is φ = 567993600.

The previous prime is 717274813. The next prime is 717274963. The reversal of 717274945 is 549472717.

It can be written as a sum of positive squares in 8 ways, for example, as 68095504 + 649179441 = 8252^2 + 25479^2 .

It is not a de Polignac number, because 717274945 - 2⁹ = 717274433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 717274895 and 717274904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205515 + ... + 208975.

It is an arithmetic number, because the mean of its divisors is an integer number (54344745).

Almost surely, 2^717274945 is an apocalyptic number.

It is an amenable number.

717274945 is a deficient number, since it is larger than the sum of its proper divisors (152240975).

717274945 is a wasteful number, since it uses less digits than its factorization.

717274945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876.

The product of its digits is 493920, while the sum is 46.

The square root of 717274945 is about 26781.9891904989. The cubic root of 717274945 is about 895.1487721229.

The spelling of 717274945 in words is "seven hundred seventeen million, two hundred seventy-four thousand, nine hundred forty-five".