745072650 has 288 divisors, whose sum is σ = 2460556800. Its totient is φ = 157852800.

The previous prime is 745072639. The next prime is 745072681. The reversal of 745072650 is 56270547.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3531045 + ... + 3531255.

It is an arithmetic number, because the mean of its divisors is an integer number (8543600).

Almost surely, 2^745072650 is an apocalyptic number.

745072650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 745072650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230278400).

745072650 is an abundant number, since it is smaller than the sum of its proper divisors (1715484150).

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

745072650 is a wasteful number, since it uses less digits than its factorization.

745072650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 745072650 is about 27296.0189404975. The cubic root of 745072650 is about 906.5662366833.

The spelling of 745072650 in words is "seven hundred forty-five million, seventy-two thousand, six hundred fifty".