7623666 has 16 divisors (see below), whose sum is σ = 16941600. Its totient is φ = 2541204.

The previous prime is 7623661. The next prime is 7623689. The reversal of 7623666 is 6663267.

It is a d-powerful number, because it can be written as 7⁸ + 6³ + 2¹⁷ + 3² + 6⁴ + 6⁶ + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 7623666.

It is not an unprimeable number, because it can be changed into a prime (7623661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70536 + ... + 70643.

It is an arithmetic number, because the mean of its divisors is an integer number (1058850).

Almost surely, 2^7623666 is an apocalyptic number.

7623666 is an abundant number, since it is smaller than the sum of its proper divisors (9317934).

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

7623666 is a wasteful number, since it uses less digits than its factorization.

7623666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141190 (or 141184 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 7623666 is about 2761.0986943606. The cubic root of 7623666 is about 196.8133802622.

The spelling of 7623666 in words is "seven million, six hundred twenty-three thousand, six hundred sixty-six".