666152863 has 4 divisors (see below), whose sum is σ = 701213560. Its totient is φ = 631092168.

The previous prime is 666152857. The next prime is 666152867. The reversal of 666152863 is 368251666.

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 666152863 - 2⁹ = 666152351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666152867) 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, 17530320 + ... + 17530357.

It is an arithmetic number, because the mean of its divisors is an integer number (175303390).

Almost surely, 2^666152863 is an apocalyptic number.

666152863 is a deficient number, since it is larger than the sum of its proper divisors (35060697).

666152863 is a wasteful number, since it uses less digits than its factorization.

666152863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35060696.

The product of its digits is 311040, while the sum is 43.

The square root of 666152863 is about 25809.9372916712. The cubic root of 666152863 is about 873.3559826336.

The spelling of 666152863 in words is "six hundred sixty-six million, one hundred fifty-two thousand, eight hundred sixty-three".