745461404657 has 8 divisors (see below), whose sum is σ = 745878743400. Its totient is φ = 745044168960.

The previous prime is 745461404617. The next prime is 745461404659. The reversal of 745461404657 is 756404164547.

It can be written as a sum of positive squares in 4 ways, for example, as 477659294641 + 267802110016 = 691129^2 + 517496^2 .

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 745461404657 - 2¹⁸ = 745461142513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745461404599 and 745461404608.

It is not an unprimeable number, because it can be changed into a prime (745461404659) 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, 17722583 + ... + 17764595.

It is an arithmetic number, because the mean of its divisors is an integer number (93234842925).

Almost surely, 2^745461404657 is an apocalyptic number.

It is an amenable number.

745461404657 is a deficient number, since it is larger than the sum of its proper divisors (417338743).

745461404657 is a wasteful number, since it uses less digits than its factorization.

745461404657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51523.

The product of its (nonzero) digits is 11289600, while the sum is 53.

The spelling of 745461404657 in words is "seven hundred forty-five billion, four hundred sixty-one million, four hundred four thousand, six hundred fifty-seven".