669624733 has 16 divisors (see below), whose sum is σ = 722475520. Its totient is φ = 618724656.

The previous prime is 669624731. The next prime is 669624757. The reversal of 669624733 is 337426966.

It is a cyclic number.

It is not a de Polignac number, because 669624733 - 2¹ = 669624731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669624731) 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, 128566 + ... + 133672.

It is an arithmetic number, because the mean of its divisors is an integer number (45154720).

Almost surely, 2^669624733 is an apocalyptic number.

It is an amenable number.

669624733 is a deficient number, since it is larger than the sum of its proper divisors (52850787).

669624733 is a wasteful number, since it uses less digits than its factorization.

669624733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296.

The product of its digits is 979776, while the sum is 46.

The square root of 669624733 is about 25877.1082812589. The cubic root of 669624733 is about 874.8706129228.

The spelling of 669624733 in words is "six hundred sixty-nine million, six hundred twenty-four thousand, seven hundred thirty-three".