745508017 has 8 divisors (see below), whose sum is σ = 785768040. Its totient is φ = 706218240.

The previous prime is 745508009. The next prime is 745508051. The reversal of 745508017 is 710805547.

It can be written as a sum of positive squares in 4 ways, for example, as 439992576 + 305515441 = 20976^2 + 17479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745508017 - 2³ = 745508009 is a prime.

It is a super-2 number, since 2×745508017² = 1111564406822544578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745508077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240984 + ... + 244057.

It is an arithmetic number, because the mean of its divisors is an integer number (98221005).

Almost surely, 2^745508017 is an apocalyptic number.

It is an amenable number.

745508017 is a deficient number, since it is larger than the sum of its proper divisors (40260023).

745508017 is a wasteful number, since it uses less digits than its factorization.

745508017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485123.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 745508017 is about 27303.9926933773. The cubic root of 745508017 is about 906.7427797232.

The spelling of 745508017 in words is "seven hundred forty-five million, five hundred eight thousand, seventeen".