624666427 has 16 divisors (see below), whose sum is σ = 793504512. Its totient is φ = 477565920.

The previous prime is 624666421. The next prime is 624666431. The reversal of 624666427 is 724666426.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-624666427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624666421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72453 + ... + 80614.

It is an arithmetic number, because the mean of its divisors is an integer number (49594032).

Almost surely, 2^624666427 is an apocalyptic number.

624666427 is a deficient number, since it is larger than the sum of its proper divisors (168838085).

624666427 is a wasteful number, since it uses less digits than its factorization.

624666427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153138.

The product of its digits is 580608, while the sum is 43.

The square root of 624666427 is about 24993.3276495948. The cubic root of 624666427 is about 854.8358391212.

Subtracting 624666427 from its reverse (724666426), we obtain a palindrome (99999999).

The spelling of 624666427 in words is "six hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-seven".