745217616 has 160 divisors (see below), whose sum is σ = 2279854080. Its totient is φ = 206784000.

The previous prime is 745217597. The next prime is 745217623. The reversal of 745217616 is 616712547.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1036105 + ... + 1036823.

It is an arithmetic number, because the mean of its divisors is an integer number (14249088).

Almost surely, 2^745217616 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 745217616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139927040).

745217616 is an abundant number, since it is smaller than the sum of its proper divisors (1534636464).

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

745217616 is a wasteful number, since it uses less digits than its factorization.

745217616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 899 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 745217616 is about 27298.6742535237. The cubic root of 745217616 is about 906.6250286049.

The spelling of 745217616 in words is "seven hundred forty-five million, two hundred seventeen thousand, six hundred sixteen".