724020631 has 8 divisors (see below), whose sum is σ = 762836400. Its totient is φ = 685275840.

The previous prime is 724020629. The next prime is 724020653. The reversal of 724020631 is 136020427.

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 724020631 - 2¹ = 724020629 is a prime.

It is a super-2 number, since 2×724020631² = 1048411748227276322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724020596 and 724020605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724020431) 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, 3891 + ... + 38251.

It is an arithmetic number, because the mean of its divisors is an integer number (95354550).

Almost surely, 2^724020631 is an apocalyptic number.

724020631 is a deficient number, since it is larger than the sum of its proper divisors (38815769).

724020631 is a wasteful number, since it uses less digits than its factorization.

724020631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35489.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 724020631 is about 26907.6314639546. The cubic root of 724020631 is about 897.9461937196.

The spelling of 724020631 in words is "seven hundred twenty-four million, twenty thousand, six hundred thirty-one".