745473408 has 64 divisors (see below), whose sum is σ = 2017580400. Its totient is φ = 243795968.

The previous prime is 745473389. The next prime is 745473427. The reversal of 745473408 is 804374547.

It is an interprime number because it is at equal distance from previous prime (745473389) and next prime (745473427).

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 745473408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038 + ... + 38666.

Almost surely, 2^745473408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745473408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008790200).

745473408 is an abundant number, since it is smaller than the sum of its proper divisors (1272106992).

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

745473408 is a wasteful number, since it uses less digits than its factorization.

745473408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36699 (or 36687 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The square root of 745473408 is about 27303.3589142435. The cubic root of 745473408 is about 906.7287481520.

The spelling of 745473408 in words is "seven hundred forty-five million, four hundred seventy-three thousand, four hundred eight".