73618 has 4 divisors (see below), whose sum is σ = 110430. Its totient is φ = 36808.

The previous prime is 73613. The next prime is 73637. The reversal of 73618 is 81637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 7569 = 257^2 + 87^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73592 and 73601.

It is not an unprimeable number, because it can be changed into a prime (73613) by changing a digit.

73618 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18403 + ... + 18406.

2⁷³⁶¹⁸ is an apocalyptic number.

73618 is a deficient number, since it is larger than the sum of its proper divisors (36812).

73618 is a wasteful number, since it uses less digits than its factorization.

73618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36811.

The product of its digits is 1008, while the sum is 25.

The square root of 73618 is about 271.3263717371. The cubic root of 73618 is about 41.9109982274.

The spelling of 73618 in words is "seventy-three thousand, six hundred eighteen".