624966949 has 4 divisors (see below), whose sum is σ = 627100236. Its totient is φ = 622833664.

The previous prime is 624966929. The next prime is 624966967. The reversal of 624966949 is 949669426.

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

It can be written as a sum of positive squares in 2 ways, for example, as 565012900 + 59954049 = 23770^2 + 7743^2 .

It is a cyclic number.

It is not a de Polignac number, because 624966949 - 2⁹ = 624966437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 624966949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624966919) 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, 1066204 + ... + 1066789.

It is an arithmetic number, because the mean of its divisors is an integer number (156775059).

Almost surely, 2^624966949 is an apocalyptic number.

It is an amenable number.

624966949 is a deficient number, since it is larger than the sum of its proper divisors (2133287).

624966949 is a wasteful number, since it uses less digits than its factorization.

624966949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133286.

The product of its digits is 5038848, while the sum is 55.

The square root of 624966949 is about 24999.3389712608. The cubic root of 624966949 is about 854.9729020287.

The spelling of 624966949 in words is "six hundred twenty-four million, nine hundred sixty-six thousand, nine hundred forty-nine".