65140166 has 16 divisors (see below), whose sum is σ = 120259104. Its totient is φ = 25769664.

The previous prime is 65140139. The next prime is 65140169. The reversal of 65140166 is 66104156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65140169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178775 + ... + 179138.

It is an arithmetic number, because the mean of its divisors is an integer number (7516194).

Almost surely, 2^65140166 is an apocalyptic number.

65140166 is a deficient number, since it is larger than the sum of its proper divisors (55118938).

65140166 is a wasteful number, since it uses less digits than its factorization.

65140166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357935.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 65140166 is about 8070.9457933999. The cubic root of 65140166 is about 402.3613781347.

The spelling of 65140166 in words is "sixty-five million, one hundred forty thousand, one hundred sixty-six".