745698312 has 40 divisors (see below), whose sum is σ = 2088647550. Its totient is φ = 248565888.

The previous prime is 745698307. The next prime is 745698313. The reversal of 745698312 is 213896547.

745698312 is a `hidden beast` number, since 7 + 4 + 569 + 83 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 550090116 + 195608196 = 23454^2 + 13986^2 .

It is not an unprimeable number, because it can be changed into a prime (745698313) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 574737 + ... + 576032.

Almost surely, 2^745698312 is an apocalyptic number.

745698312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

745698312 is an abundant number, since it is smaller than the sum of its proper divisors (1342949238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745698312 is a wasteful number, since it uses less digits than its factorization.

745698312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150787 (or 1150774 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 745698312 is about 27307.4772177878. The cubic root of 745698312 is about 906.8199235115.

The spelling of 745698312 in words is "seven hundred forty-five million, six hundred ninety-eight thousand, three hundred twelve".