745870631 has 16 divisors (see below), whose sum is σ = 906888960. Its totient is φ = 604586880.

The previous prime is 745870627. The next prime is 745870649. The reversal of 745870631 is 136078547.

745870631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 745870631 - 2² = 745870627 is a prime.

It is a super-2 number, since 2×745870631² = 1112645996376676322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745870031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101411 + ... + 108516.

It is an arithmetic number, because the mean of its divisors is an integer number (56680560).

Almost surely, 2^745870631 is an apocalyptic number.

745870631 is a deficient number, since it is larger than the sum of its proper divisors (161018329).

745870631 is a wasteful number, since it uses less digits than its factorization.

745870631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209974.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 745870631 is about 27310.6321970034. The cubic root of 745870631 is about 906.8897686776.

The spelling of 745870631 in words is "seven hundred forty-five million, eight hundred seventy thousand, six hundred thirty-one".