745894640 has 20 divisors (see below), whose sum is σ = 1734205224. Its totient is φ = 298357824.

The previous prime is 745894631. The next prime is 745894651. The reversal of 745894640 is 46498547.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4661762 + ... + 4661921.

Almost surely, 2^745894640 is an apocalyptic number.

It is an amenable number.

745894640 is an abundant number, since it is smaller than the sum of its proper divisors (988310584).

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

745894640 is a wasteful number, since it uses less digits than its factorization.

745894640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9323696 (or 9323690 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 745894640 is about 27311.0717475532. The cubic root of 745894640 is about 906.8994992671.

The spelling of 745894640 in words is "seven hundred forty-five million, eight hundred ninety-four thousand, six hundred forty".