718427864 has 64 divisors (see below), whose sum is σ = 1682553600. Its totient is φ = 279388800.

The previous prime is 718427861. The next prime is 718427869. The reversal of 718427864 is 468724817.

718427864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×718427864² = 1032277191543204992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718427861) 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, 657959 + ... + 659049.

It is an arithmetic number, because the mean of its divisors is an integer number (26289900).

Almost surely, 2^718427864 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 718427864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841276800).

718427864 is an abundant number, since it is smaller than the sum of its proper divisors (964125736).

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

718427864 is a wasteful number, since it uses less digits than its factorization.

718427864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184 (or 2180 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 718427864 is about 26803.5046962146. The cubic root of 718427864 is about 895.6281241378.

The spelling of 718427864 in words is "seven hundred eighteen million, four hundred twenty-seven thousand, eight hundred sixty-four".