662016623 has 4 divisors (see below), whose sum is σ = 668090280. Its totient is φ = 655942968.

The previous prime is 662016581. The next prime is 662016631. The reversal of 662016623 is 326610266.

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

It is a cyclic number.

It is not a de Polignac number, because 662016623 - 2⁶ = 662016559 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 662016623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662016673) 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, 3036665 + ... + 3036882.

It is an arithmetic number, because the mean of its divisors is an integer number (167022570).

Almost surely, 2^662016623 is an apocalyptic number.

662016623 is a deficient number, since it is larger than the sum of its proper divisors (6073657).

662016623 is a wasteful number, since it uses less digits than its factorization.

662016623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073656.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 662016623 is about 25729.6836941304. The cubic root of 662016623 is about 871.5446303608.

Adding to 662016623 its reverse (326610266), we get a palindrome (988626889).

The spelling of 662016623 in words is "six hundred sixty-two million, sixteen thousand, six hundred twenty-three".