716661440 has 112 divisors (see below), whose sum is σ = 1887870240. Its totient is φ = 256942080.

The previous prime is 716661431. The next prime is 716661457. The reversal of 716661440 is 44166617.

It is a self number, because there is not a number n which added to its sum of digits gives 716661440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255566 + ... + 258354.

Almost surely, 2^716661440 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 716661440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943935120).

716661440 is an abundant number, since it is smaller than the sum of its proper divisors (1171208800).

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

716661440 is a wasteful number, since it uses less digits than its factorization.

716661440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890 (or 2880 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 716661440 is about 26770.5330540877. The cubic root of 716661440 is about 894.8934841976.

The spelling of 716661440 in words is "seven hundred sixteen million, six hundred sixty-one thousand, four hundred forty".