708725640 has 128 divisors (see below), whose sum is σ = 2444463360. Its totient is φ = 161025024.

The previous prime is 708725623. The next prime is 708725671. The reversal of 708725640 is 46527807.

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, 142882 + ... + 147758.

It is an arithmetic number, because the mean of its divisors is an integer number (19097370).

Almost surely, 2^708725640 is an apocalyptic number.

708725640 is a gapful number since it is divisible by the number (70) 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 708725640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222231680).

708725640 is an abundant number, since it is smaller than the sum of its proper divisors (1735737720).

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

708725640 is a wasteful number, since it uses less digits than its factorization.

708725640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071 (or 5067 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 708725640 is about 26621.9015098471. The cubic root of 708725640 is about 891.5780780575.

The spelling of 708725640 in words is "seven hundred eight million, seven hundred twenty-five thousand, six hundred forty".