718164 has 18 divisors (see below), whose sum is σ = 1815450. Its totient is φ = 239376.

The previous prime is 718163. The next prime is 718169. The reversal of 718164 is 461817.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 242064 = 690^2 + 492^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9939 + ... + 10010.

2⁷¹⁸¹⁶⁴ is an apocalyptic number.

It is an amenable number.

718164 is an abundant number, since it is smaller than the sum of its proper divisors (1097286).

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

718164 is a wasteful number, since it uses less digits than its factorization.

718164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959 (or 19954 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 718164 is about 847.4455734736. The cubic root of 718164 is about 89.5518462023.

The spelling of 718164 in words is "seven hundred eighteen thousand, one hundred sixty-four".