718797820 has 48 divisors (see below), whose sum is σ = 1643906880. Its totient is φ = 262411776.

The previous prime is 718797809. The next prime is 718797829. The reversal of 718797820 is 28797817.

718797820 = T₂₉₆ + T₂₉₇ + ... + T₁₆₃₀.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718797829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7609 + ... + 38671.

It is an arithmetic number, because the mean of its divisors is an integer number (34248060).

Almost surely, 2^718797820 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 718797820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821953440).

718797820 is an abundant number, since it is smaller than the sum of its proper divisors (925109060).

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

718797820 is a wasteful number, since it uses less digits than its factorization.

718797820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31174 (or 31172 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 49.

The square root of 718797820 is about 26810.4050696740. The cubic root of 718797820 is about 895.7818329771.

The spelling of 718797820 in words is "seven hundred eighteen million, seven hundred ninety-seven thousand, eight hundred twenty".