718642 has 16 divisors (see below), whose sum is σ = 1135872. Its totient is φ = 340560.

The previous prime is 718633. The next prime is 718657. The reversal of 718642 is 246817.

It is a self number, because there is not a number n which added to its sum of digits gives 718642.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4068 + ... + 4240.

It is an arithmetic number, because the mean of its divisors is an integer number (70992).

2⁷¹⁸⁶⁴² is an apocalyptic number.

718642 is a deficient number, since it is larger than the sum of its proper divisors (417230).

718642 is a wasteful number, since it uses less digits than its factorization.

718642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its digits is 2688, while the sum is 28.

The square root of 718642 is about 847.7275505727. The cubic root of 718642 is about 89.5717099516.

The spelling of 718642 in words is "seven hundred eighteen thousand, six hundred forty-two".