718453680 has 240 divisors, whose sum is σ = 2612332800. Its totient is φ = 162860544.

The previous prime is 718453667. The next prime is 718453709. The reversal of 718453680 is 86354817.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2340087 + ... + 2340393.

It is an arithmetic number, because the mean of its divisors is an integer number (10884720).

Almost surely, 2^718453680 is an apocalyptic number.

718453680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718453680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306166400).

718453680 is an abundant number, since it is smaller than the sum of its proper divisors (1893879120).

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

718453680 is a wasteful number, since it uses less digits than its factorization.

718453680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 718453680 is about 26803.9862707023. The cubic root of 718453680 is about 895.6388518484.

The spelling of 718453680 in words is "seven hundred eighteen million, four hundred fifty-three thousand, six hundred eighty".