724542667 has 4 divisors (see below), whose sum is σ = 725966640. Its totient is φ = 723118696.

The previous prime is 724542659. The next prime is 724542671. The reversal of 724542667 is 766245427.

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 724542667 - 2³ = 724542659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724542617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711223 + ... + 712240.

It is an arithmetic number, because the mean of its divisors is an integer number (181491660).

Almost surely, 2^724542667 is an apocalyptic number.

724542667 is a deficient number, since it is larger than the sum of its proper divisors (1423973).

724542667 is a wasteful number, since it uses less digits than its factorization.

724542667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423972.

The product of its digits is 564480, while the sum is 43.

The square root of 724542667 is about 26917.3302353707. The cubic root of 724542667 is about 898.1619553530.

The spelling of 724542667 in words is "seven hundred twenty-four million, five hundred forty-two thousand, six hundred sixty-seven".