75618 has 12 divisors (see below), whose sum is σ = 163878. Its totient is φ = 25200.

The previous prime is 75617. The next prime is 75619. The reversal of 75618 is 81657.

It is an interprime number because it is at equal distance from previous prime (75617) and next prime (75619).

It can be written as a sum of positive squares in only one way, i.e., 74529 + 1089 = 273^2 + 33^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75591 and 75600.

It is not an unprimeable number, because it can be changed into a prime (75611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2083 + ... + 2118.

2⁷⁵⁶¹⁸ is an apocalyptic number.

75618 is an abundant number, since it is smaller than the sum of its proper divisors (88260).

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

75618 is a wasteful number, since it uses less digits than its factorization.

75618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4206 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 75618 is about 274.9872724327. The cubic root of 75618 is about 42.2871479826.

It can be divided in two parts, 7561 and 8, that added together give a square (7569 = 87²).

The spelling of 75618 in words is "seventy-five thousand, six hundred eighteen".