666482776501 has 8 divisors (see below), whose sum is σ = 669098703744. Its totient is φ = 663871745040.

The previous prime is 666482776499. The next prime is 666482776513. The reversal of 666482776501 is 105677284666.

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

It is a cyclic number.

It is not a de Polignac number, because 666482776501 - 2¹ = 666482776499 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 (666482776571) 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, 951025 + ... + 1495798.

It is an arithmetic number, because the mean of its divisors is an integer number (83637337968).

Almost surely, 2^666482776501 is an apocalyptic number.

It is an amenable number.

666482776501 is a deficient number, since it is larger than the sum of its proper divisors (2615927243).

666482776501 is a wasteful number, since it uses less digits than its factorization.

666482776501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447891.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 666482776501 in words is "six hundred sixty-six billion, four hundred eighty-two million, seven hundred seventy-six thousand, five hundred one".