723534869 has 4 divisors (see below), whose sum is σ = 725846796. Its totient is φ = 721222944.

The previous prime is 723534827. The next prime is 723534871. The reversal of 723534869 is 968435327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 968435327 = 137 ⋅7068871.

It can be written as a sum of positive squares in 2 ways, for example, as 8614225 + 714920644 = 2935^2 + 26738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723534869 is a prime.

It is a super-2 number, since 2×723534869² = 1047005413317694322, 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 (723530869) 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, 1155494 + ... + 1156119.

It is an arithmetic number, because the mean of its divisors is an integer number (181461699).

Almost surely, 2^723534869 is an apocalyptic number.

It is an amenable number.

723534869 is a deficient number, since it is larger than the sum of its proper divisors (2311927).

723534869 is a wasteful number, since it uses less digits than its factorization.

723534869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311926.

The product of its digits is 1088640, while the sum is 47.

The square root of 723534869 is about 26898.6034767606. The cubic root of 723534869 is about 897.7453312459.

The spelling of 723534869 in words is "seven hundred twenty-three million, five hundred thirty-four thousand, eight hundred sixty-nine".