724672531 has 8 divisors (see below), whose sum is σ = 790788528. Its totient is φ = 658596000.

The previous prime is 724672519. The next prime is 724672573. The reversal of 724672531 is 135276427.

It is a happy number.

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 724672531 - 2¹¹ = 724670483 is a prime.

It is a super-2 number, since 2×724672531² = 1050300554371891922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724672031) 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, 39141 + ... + 54601.

It is an arithmetic number, because the mean of its divisors is an integer number (98848566).

Almost surely, 2^724672531 is an apocalyptic number.

724672531 is a deficient number, since it is larger than the sum of its proper divisors (66115997).

724672531 is a wasteful number, since it uses less digits than its factorization.

724672531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19733.

The product of its digits is 70560, while the sum is 37.

The square root of 724672531 is about 26919.7424021851. The cubic root of 724672531 is about 898.2156130792.

The spelling of 724672531 in words is "seven hundred twenty-four million, six hundred seventy-two thousand, five hundred thirty-one".