745850639 has 8 divisors (see below), whose sum is σ = 808986528. Its totient is φ = 684855040.

The previous prime is 745850629. The next prime is 745850657. The reversal of 745850639 is 936058547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745850639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745850593 and 745850602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745850629) 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, 534347 + ... + 535740.

It is an arithmetic number, because the mean of its divisors is an integer number (101123316).

Almost surely, 2^745850639 is an apocalyptic number.

745850639 is a deficient number, since it is larger than the sum of its proper divisors (63135889).

745850639 is a wasteful number, since it uses less digits than its factorization.

745850639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070145.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 745850639 is about 27310.2661832506. The cubic root of 745850639 is about 906.8816659757.

The spelling of 745850639 in words is "seven hundred forty-five million, eight hundred fifty thousand, six hundred thirty-nine".