724646427 has 4 divisors (see below), whose sum is σ = 966195240. Its totient is φ = 483097616.

The previous prime is 724646411. The next prime is 724646431.

It is a happy number.

724646427 is nontrivially palindromic in base 10.

724646427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 724646427 - 2⁴ = 724646411 is a prime.

It is a super-2 number, since 2×724646427² = 1050224888327732658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (724646477) 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, 120774402 + ... + 120774407.

It is an arithmetic number, because the mean of its divisors is an integer number (241548810).

Almost surely, 2^724646427 is an apocalyptic number.

724646427 is a deficient number, since it is larger than the sum of its proper divisors (241548813).

724646427 is a wasteful number, since it uses less digits than its factorization.

724646427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241548812.

The product of its digits is 451584, while the sum is 42.

The square root of 724646427 is about 26919.2575491970. The cubic root of 724646427 is about 898.2048278390.

The spelling of 724646427 in words is "seven hundred twenty-four million, six hundred forty-six thousand, four hundred twenty-seven".