731732069 has 4 divisors (see below), whose sum is σ = 732342540. Its totient is φ = 731121600.

The previous prime is 731732063. The next prime is 731732077. The reversal of 731732069 is 960237137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960237137 = 2333 ⋅411589.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 719044225 = 3562^2 + 26815^2 .

It is a cyclic number.

It is not a de Polignac number, because 731732069 - 2⁸ = 731731813 is a prime.

It is a super-2 number, since 2×731732069² = 1070863641606041522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731732063) 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, 303434 + ... + 305835.

It is an arithmetic number, because the mean of its divisors is an integer number (183085635).

Almost surely, 2^731732069 is an apocalyptic number.

It is an amenable number.

731732069 is a deficient number, since it is larger than the sum of its proper divisors (610471).

731732069 is a wasteful number, since it uses less digits than its factorization.

731732069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610470.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 731732069 is about 27050.5465564007. The cubic root of 731732069 is about 901.1229066263.

The spelling of 731732069 in words is "seven hundred thirty-one million, seven hundred thirty-two thousand, sixty-nine".