65570166 has 24 divisors (see below), whose sum is σ = 143783640. Its totient is φ = 21592896.

The previous prime is 65570143. The next prime is 65570213. The reversal of 65570166 is 66107556.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65570166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20451 + ... + 23438.

It is an arithmetic number, because the mean of its divisors is an integer number (5990985).

Almost surely, 2^65570166 is an apocalyptic number.

65570166 is an abundant number, since it is smaller than the sum of its proper divisors (78213474).

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

65570166 is a wasteful number, since it uses less digits than its factorization.

65570166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43980 (or 43977 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 65570166 is about 8097.5407377796. The cubic root of 65570166 is about 403.2447863965.

The spelling of 65570166 in words is "sixty-five million, five hundred seventy thousand, one hundred sixty-six".