716619640 has 64 divisors (see below), whose sum is σ = 1762560000. Its totient is φ = 260058240.

The previous prime is 716619613. The next prime is 716619661. The reversal of 716619640 is 46916617.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 716619593 and 716619602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262201 + ... + 264919.

It is an arithmetic number, because the mean of its divisors is an integer number (27540000).

Almost surely, 2^716619640 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 716619640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881280000).

716619640 is an abundant number, since it is smaller than the sum of its proper divisors (1045940360).

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

716619640 is a wasteful number, since it uses less digits than its factorization.

716619640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 716619640 is about 26769.7523335574. The cubic root of 716619640 is about 894.8760853382.

The spelling of 716619640 in words is "seven hundred sixteen million, six hundred nineteen thousand, six hundred forty".