73605643 has 8 divisors (see below), whose sum is σ = 75084800. Its totient is φ = 72140328.

The previous prime is 73605613. The next prime is 73605647. The reversal of 73605643 is 34650637.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73605643 - 2⁹ = 73605131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73605599 and 73605608.

It is not an unprimeable number, because it can be changed into a prime (73605647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7630 + ... + 14332.

It is an arithmetic number, because the mean of its divisors is an integer number (9385600).

Almost surely, 2^73605643 is an apocalyptic number.

73605643 is a deficient number, since it is larger than the sum of its proper divisors (1479157).

73605643 is a wasteful number, since it uses less digits than its factorization.

73605643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6921.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 73605643 is about 8579.3731122967. The cubic root of 73605643 is about 419.0865313430.

The spelling of 73605643 in words is "seventy-three million, six hundred five thousand, six hundred forty-three".