66717170622 has 96 divisors (see below), whose sum is σ = 147906813600. Its totient is φ = 21729565440.

The previous prime is 66717170609. The next prime is 66717170717. The reversal of 66717170622 is 22607171766.

66717170622 is a `hidden beast` number, since 6 + 6 + 7 + 1 + 7 + 17 + 0 + 622 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123321672 + ... + 123322212.

It is an arithmetic number, because the mean of its divisors is an integer number (1540695975).

Almost surely, 2^66717170622 is an apocalyptic number.

66717170622 is an abundant number, since it is smaller than the sum of its proper divisors (81189642978).

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

66717170622 is a wasteful number, since it uses less digits than its factorization.

66717170622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 66717170622 in words is "sixty-six billion, seven hundred seventeen million, one hundred seventy thousand, six hundred twenty-two".