745708656 has 480 divisors, whose sum is σ = 2707326720. Its totient is φ = 174182400.

The previous prime is 745708609. The next prime is 745708699. The reversal of 745708656 is 656807547.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18187996 + ... + 18188036.

It is an arithmetic number, because the mean of its divisors is an integer number (5640264).

Almost surely, 2^745708656 is an apocalyptic number.

745708656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745708656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353663360).

745708656 is an abundant number, since it is smaller than the sum of its proper divisors (1961618064).

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

745708656 is a wasteful number, since it uses less digits than its factorization.

745708656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The square root of 745708656 is about 27307.6666158059. Note that the first 4 decimals coincide. The cubic root of 745708656 is about 906.8241164949.

The spelling of 745708656 in words is "seven hundred forty-five million, seven hundred eight thousand, six hundred fifty-six".