65540146 has 24 divisors (see below), whose sum is σ = 114912000. Its totient is φ = 27953352.

The previous prime is 65540143. The next prime is 65540147. The reversal of 65540146 is 64104556.

It is not an unprimeable number, because it can be changed into a prime (65540141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20355 + ... + 23353.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^65540146 is an apocalyptic number.

65540146 is a deficient number, since it is larger than the sum of its proper divisors (49371854).

65540146 is a wasteful number, since it uses less digits than its factorization.

65540146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3231 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 65540146 is about 8095.6868763558. The cubic root of 65540146 is about 403.1832377934.

The spelling of 65540146 in words is "sixty-five million, five hundred forty thousand, one hundred forty-six".