718422 has 8 divisors (see below), whose sum is σ = 1436856. Its totient is φ = 239472.

The previous prime is 718411. The next prime is 718423. The reversal of 718422 is 224817.

It is a sphenic number, since it is the product of 3 distinct primes.

718422 is an admirable number.

It is a super-2 number, since 2×718422² = 1032260340168, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 718392 and 718401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59863 + ... + 59874.

It is an arithmetic number, because the mean of its divisors is an integer number (179607).

2⁷¹⁸⁴²² is an apocalyptic number.

718422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

718422 is a wasteful number, since it uses less digits than its factorization.

718422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119742.

The product of its digits is 896, while the sum is 24.

The square root of 718422 is about 847.5977819697. The cubic root of 718422 is about 89.5625687346.

The spelling of 718422 in words is "seven hundred eighteen thousand, four hundred twenty-two".