623016666 has 24 divisors (see below), whose sum is σ = 1350329760. Its totient is φ = 207601416.

The previous prime is 623016649. The next prime is 623016683. The reversal of 623016666 is 666610326.

623016666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (623016649) and next prime (623016683).

It is a super-2 number, since 2×623016666² = 776299532227511112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 623016666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94795 + ... + 101153.

It is an arithmetic number, because the mean of its divisors is an integer number (56263740).

Almost surely, 2^623016666 is an apocalyptic number.

623016666 is an abundant number, since it is smaller than the sum of its proper divisors (727313094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623016666 is a wasteful number, since it uses less digits than its factorization.

623016666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11810 (or 11807 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 623016666 is about 24960.3018010600. The cubic root of 623016666 is about 854.0826274244.

The spelling of 623016666 in words is "six hundred twenty-three million, sixteen thousand, six hundred sixty-six".