85663455670 has 32 divisors (see below), whose sum is σ = 174795072480. Its totient is φ = 29964867840.

The previous prime is 85663455653. The next prime is 85663455707. The reversal of 85663455670 is 7655436658.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17338311 + ... + 17343250.

It is an arithmetic number, because the mean of its divisors is an integer number (5462346015).

Almost surely, 2^85663455670 is an apocalyptic number.

85663455670 is an abundant number, since it is smaller than the sum of its proper divisors (89131616810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85663455670 is a wasteful number, since it uses less digits than its factorization.

85663455670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34681600.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 85663455670 in words is "eighty-five billion, six hundred sixty-three million, four hundred fifty-five thousand, six hundred seventy".