666463243 has 8 divisors (see below), whose sum is σ = 681026112. Its totient is φ = 651916416.

The previous prime is 666463229. The next prime is 666463261. The reversal of 666463243 is 342364666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666463243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666463196 and 666463205.

It is not an unprimeable number, because it can be changed into a prime (666463283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123171 + ... + 128467.

It is an arithmetic number, because the mean of its divisors is an integer number (85128264).

Almost surely, 2^666463243 is an apocalyptic number.

666463243 is a deficient number, since it is larger than the sum of its proper divisors (14562869).

666463243 is a wasteful number, since it uses less digits than its factorization.

666463243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021.

The product of its digits is 373248, while the sum is 40.

The square root of 666463243 is about 25815.9493918004. The cubic root of 666463243 is about 873.4916022267.

The spelling of 666463243 in words is "six hundred sixty-six million, four hundred sixty-three thousand, two hundred forty-three".