745294678729 has 8 divisors (see below), whose sum is σ = 748195458440. Its totient is φ = 742399257600.

The previous prime is 745294678669. The next prime is 745294678753. The reversal of 745294678729 is 927876492547.

It can be written as a sum of positive squares in 4 ways, for example, as 66178591504 + 679116087225 = 257252^2 + 824085^2 .

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 745294678729 - 2³³ = 736704744137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745294678789) 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, 1060824 + ... + 1617385.

It is an arithmetic number, because the mean of its divisors is an integer number (93524432305).

Almost surely, 2^745294678729 is an apocalyptic number.

It is an amenable number.

745294678729 is a deficient number, since it is larger than the sum of its proper divisors (2900779711).

745294678729 is a wasteful number, since it uses less digits than its factorization.

745294678729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679291.

The product of its digits is 426746880, while the sum is 70.

The spelling of 745294678729 in words is "seven hundred forty-five billion, two hundred ninety-four million, six hundred seventy-eight thousand, seven hundred twenty-nine".