662644399 has 16 divisors (see below), whose sum is σ = 724492800. Its totient is φ = 603949824.

The previous prime is 662644397. The next prime is 662644417. The reversal of 662644399 is 993446266.

It is a cyclic number.

It is not a de Polignac number, because 662644399 - 2¹ = 662644397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662644397) 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, 46399 + ... + 58975.

It is an arithmetic number, because the mean of its divisors is an integer number (45280800).

Almost surely, 2^662644399 is an apocalyptic number.

662644399 is a deficient number, since it is larger than the sum of its proper divisors (61848401).

662644399 is a wasteful number, since it uses less digits than its factorization.

662644399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12702.

The product of its digits is 1679616, while the sum is 49.

The square root of 662644399 is about 25741.8802537810. The cubic root of 662644399 is about 871.8200322810.

The spelling of 662644399 in words is "six hundred sixty-two million, six hundred forty-four thousand, three hundred ninety-nine".