73685243 has 4 divisors (see below), whose sum is σ = 74126640. Its totient is φ = 73243848.

The previous prime is 73685239. The next prime is 73685263. The reversal of 73685243 is 34258637.

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

It is a cyclic number.

It is not a de Polignac number, because 73685243 - 2² = 73685239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73685197 and 73685206.

It is not an unprimeable number, because it can be changed into a prime (73685263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220448 + ... + 220781.

It is an arithmetic number, because the mean of its divisors is an integer number (18531660).

Almost surely, 2^73685243 is an apocalyptic number.

73685243 is a deficient number, since it is larger than the sum of its proper divisors (441397).

73685243 is a wasteful number, since it uses less digits than its factorization.

73685243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441396.

The product of its digits is 120960, while the sum is 38.

The square root of 73685243 is about 8584.0108923510. The cubic root of 73685243 is about 419.2375490658.

The spelling of 73685243 in words is "seventy-three million, six hundred eighty-five thousand, two hundred forty-three".