73618785 has 12 divisors (see below), whose sum is σ = 127605972. Its totient is φ = 39263328.

The previous prime is 73618763. The next prime is 73618793. The reversal of 73618785 is 58781637.

It can be written as a sum of positive squares in 2 ways, for example, as 48608784 + 25010001 = 6972^2 + 5001^2 .

It is not a de Polignac number, because 73618785 - 2¹⁵ = 73586017 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1635973 = 73618785 / (7 + 3 + 6 + 1 + 8 + 7 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 73618785.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817942 + ... + 818031.

It is an arithmetic number, because the mean of its divisors is an integer number (10633831).

Almost surely, 2^73618785 is an apocalyptic number.

It is an amenable number.

73618785 is a deficient number, since it is larger than the sum of its proper divisors (53987187).

73618785 is a wasteful number, since it uses less digits than its factorization.

73618785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635984 (or 1635981 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 73618785 is about 8580.1389848883. The cubic root of 73618785 is about 419.1114719464. Note that the first 3 decimals are identical.

The spelling of 73618785 in words is "seventy-three million, six hundred eighteen thousand, seven hundred eighty-five".