745507080 has 192 divisors, whose sum is σ = 2518392240. Its totient is φ = 191102976.

The previous prime is 745507051. The next prime is 745507097. The reversal of 745507080 is 80705547.

745507080 is a `hidden beast` number, since 74 + 5 + 507 + 0 + 80 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 679019364 + 66487716 = 26058^2 + 8154^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1291752 + ... + 1292328.

Almost surely, 2^745507080 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 745507080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259196120).

745507080 is an abundant number, since it is smaller than the sum of its proper divisors (1772885160).

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

745507080 is a wasteful number, since it uses less digits than its factorization.

745507080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 745507080 is about 27303.9755347092. The cubic root of 745507080 is about 906.7423998398.

The spelling of 745507080 in words is "seven hundred forty-five million, five hundred seven thousand, eighty".