666500461 has 8 divisors (see below), whose sum is σ = 730214784. Its totient is φ = 603306720.

The previous prime is 666500423. The next prime is 666500477. The reversal of 666500461 is 164005666.

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-666500461 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 (666500491) 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, 127461 + ... + 132586.

It is an arithmetic number, because the mean of its divisors is an integer number (91276848).

Almost surely, 2^666500461 is an apocalyptic number.

It is an amenable number.

666500461 is a deficient number, since it is larger than the sum of its proper divisors (63714323).

666500461 is a wasteful number, since it uses less digits than its factorization.

666500461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260291.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 666500461 is about 25816.6702151924. The cubic root of 666500461 is about 873.5078616907.

The spelling of 666500461 in words is "six hundred sixty-six million, five hundred thousand, four hundred sixty-one".