718449564 has 36 divisors (see below), whose sum is σ = 1950078984. Its totient is φ = 205271136.

The previous prime is 718449559. The next prime is 718449569. The reversal of 718449564 is 465944817.

It is an interprime number because it is at equal distance from previous prime (718449559) and next prime (718449569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718449569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610339 + ... + 611514.

Almost surely, 2^718449564 is an apocalyptic number.

It is an amenable number.

718449564 is an abundant number, since it is smaller than the sum of its proper divisors (1231629420).

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

718449564 is a wasteful number, since it uses less digits than its factorization.

718449564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221874 (or 1221865 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 718449564 is about 26803.9094909679. The cubic root of 718449564 is about 895.6371414823.

The spelling of 718449564 in words is "seven hundred eighteen million, four hundred forty-nine thousand, five hundred sixty-four".