666969662 has 8 divisors (see below), whose sum is σ = 1000599600. Its totient is φ = 333436464.

The previous prime is 666969661. The next prime is 666969679. The reversal of 666969662 is 266969666.

666969662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 666969598 and 666969607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666969661) 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, 3362 + ... + 36677.

It is an arithmetic number, because the mean of its divisors is an integer number (125074950).

Almost surely, 2^666969662 is an apocalyptic number.

666969662 is a deficient number, since it is larger than the sum of its proper divisors (333629938).

666969662 is a wasteful number, since it uses less digits than its factorization.

666969662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48370.

The product of its digits is 7558272, while the sum is 56.

The square root of 666969662 is about 25825.7557875854. The cubic root of 666969662 is about 873.7127900934.

The spelling of 666969662 in words is "six hundred sixty-six million, nine hundred sixty-nine thousand, six hundred sixty-two".