724666427 has 4 divisors (see below), whose sum is σ = 724736760. Its totient is φ = 724596096.

The previous prime is 724666421. The next prime is 724666457.

724666427 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724666427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724666421) 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, 16358 + ... + 41435.

It is an arithmetic number, because the mean of its divisors is an integer number (181184190).

Almost surely, 2^724666427 is an apocalyptic number.

724666427 is a deficient number, since it is larger than the sum of its proper divisors (70333).

724666427 is a wasteful number, since it uses less digits than its factorization.

724666427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70332.

The product of its digits is 677376, while the sum is 44.

The square root of 724666427 is about 26919.6290279045. The cubic root of 724666427 is about 898.2130911477.

The spelling of 724666427 in words is "seven hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-seven".