73146636 has 18 divisors (see below), whose sum is σ = 184898532. Its totient is φ = 24382200.

The previous prime is 73146589. The next prime is 73146643. The reversal of 73146636 is 63664137.

It is a happy number.

73146636 is a `hidden beast` number, since 7 + 3 + 14 + 6 + 636 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2031851 = 73146636 / (7 + 3 + 1 + 4 + 6 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 73146636.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1015890 + ... + 1015961.

Almost surely, 2^73146636 is an apocalyptic number.

It is an amenable number.

73146636 is an abundant number, since it is smaller than the sum of its proper divisors (111751896).

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

73146636 is a wasteful number, since it uses less digits than its factorization.

73146636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031861 (or 2031856 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 73146636 is about 8552.5806631683. The cubic root of 73146636 is about 418.2135688157.

The spelling of 73146636 in words is "seventy-three million, one hundred forty-six thousand, six hundred thirty-six".