73632745 has 4 divisors (see below), whose sum is σ = 88359300. Its totient is φ = 58906192.

The previous prime is 73632709. The next prime is 73632773. The reversal of 73632745 is 54723637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54723637 = 1867 ⋅29311.

It can be written as a sum of positive squares in 2 ways, for example, as 34857216 + 38775529 = 5904^2 + 6227^2 .

It is a cyclic number.

It is not a de Polignac number, because 73632745 - 2⁹ = 73632233 is a prime.

It is a super-2 number, since 2×73632745² = 10843562272470050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7363270 + ... + 7363279.

It is an arithmetic number, because the mean of its divisors is an integer number (22089825).

Almost surely, 2^73632745 is an apocalyptic number.

It is an amenable number.

73632745 is a deficient number, since it is larger than the sum of its proper divisors (14726555).

73632745 is a wasteful number, since it uses less digits than its factorization.

73632745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14726554.

The product of its digits is 105840, while the sum is 37.

The square root of 73632745 is about 8580.9524529623. The cubic root of 73632745 is about 419.1379616816.

The spelling of 73632745 in words is "seventy-three million, six hundred thirty-two thousand, seven hundred forty-five".