716815386 has 64 divisors (see below), whose sum is σ = 1830716160. Its totient is φ = 203653440.

The previous prime is 716815381. The next prime is 716815391. The reversal of 716815386 is 683518617.

It is an interprime number because it is at equal distance from previous prime (716815381) and next prime (716815391).

It is not an unprimeable number, because it can be changed into a prime (716815381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63180 + ... + 73656.

It is an arithmetic number, because the mean of its divisors is an integer number (28604940).

Almost surely, 2^716815386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 716815386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915358080).

716815386 is an abundant number, since it is smaller than the sum of its proper divisors (1113900774).

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

716815386 is a wasteful number, since it uses less digits than its factorization.

716815386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676 (or 10670 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 716815386 is about 26773.4081879764. The cubic root of 716815386 is about 894.9575569482.

The spelling of 716815386 in words is "seven hundred sixteen million, eight hundred fifteen thousand, three hundred eighty-six".