731685073 has 8 divisors (see below), whose sum is σ = 838937792. Its totient is φ = 625113936.

The previous prime is 731685061. The next prime is 731685113. The reversal of 731685073 is 370586137.

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 731685073 - 2⁹ = 731684561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (731685013) 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, 168090 + ... + 172387.

It is an arithmetic number, because the mean of its divisors is an integer number (104867224).

Almost surely, 2^731685073 is an apocalyptic number.

It is an amenable number.

731685073 is a deficient number, since it is larger than the sum of its proper divisors (107252719).

731685073 is a wasteful number, since it uses less digits than its factorization.

731685073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340791.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 731685073 is about 27049.6778723888. The cubic root of 731685073 is about 901.1036144653.

The spelling of 731685073 in words is "seven hundred thirty-one million, six hundred eighty-five thousand, seventy-three".