666064235 has 8 divisors (see below), whose sum is σ = 801422160. Its totient is φ = 531421344.

The previous prime is 666064211. The next prime is 666064241. The reversal of 666064235 is 532460666.

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-666064235 is a prime.

It is a super-2 number, since 2×666064235² = 887283130292270450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176705 + ... + 180434.

It is an arithmetic number, because the mean of its divisors is an integer number (100177770).

Almost surely, 2^666064235 is an apocalyptic number.

666064235 is a deficient number, since it is larger than the sum of its proper divisors (135357925).

666064235 is a wasteful number, since it uses less digits than its factorization.

666064235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357517.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 666064235 is about 25808.2202989668. The cubic root of 666064235 is about 873.3172491680.

The spelling of 666064235 in words is "six hundred sixty-six million, sixty-four thousand, two hundred thirty-five".