667648584285 has 8 divisors (see below), whose sum is σ = 1068237734880. Its totient is φ = 356079244944.

The previous prime is 667648584259. The next prime is 667648584293. The reversal of 667648584285 is 582485846766.

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

It is not a de Polignac number, because 667648584285 - 2¹⁵ = 667648551517 is a prime.

It is a super-2 number, since 2×667648584285² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 22254952795 + ... + 22254952824.

It is an arithmetic number, because the mean of its divisors is an integer number (133529716860).

Almost surely, 2^667648584285 is an apocalyptic number.

It is an amenable number.

667648584285 is a deficient number, since it is larger than the sum of its proper divisors (400589150595).

667648584285 is a wasteful number, since it uses less digits than its factorization.

667648584285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44509905627.

The product of its digits is 619315200, while the sum is 69.

The spelling of 667648584285 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred eighty-four thousand, two hundred eighty-five".