6401866285 has 8 divisors (see below), whose sum is σ = 7682695776. Its totient is φ = 5121188880.

The previous prime is 6401866271. The next prime is 6401866349. The reversal of 6401866285 is 5826681046.

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

It is not a de Polignac number, because 6401866285 - 2⁹ = 6401865773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100422 + ... + 151288.

It is an arithmetic number, because the mean of its divisors is an integer number (960336972).

Almost surely, 2^6401866285 is an apocalyptic number.

It is an amenable number.

6401866285 is a deficient number, since it is larger than the sum of its proper divisors (1280829491).

6401866285 is a wasteful number, since it uses less digits than its factorization.

6401866285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76043.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 6401866285 is about 80011.6634310274. The cubic root of 6401866285 is about 1856.8159852313.

The spelling of 6401866285 in words is "six billion, four hundred one million, eight hundred sixty-six thousand, two hundred eighty-five".