65140145 has 16 divisors (see below), whose sum is σ = 92218368. Its totient is φ = 43225920.

The previous prime is 65140139. The next prime is 65140169. The reversal of 65140145 is 54104156.

It is not a de Polignac number, because 65140145 - 2⁴ = 65140129 is a prime.

It is a Duffinian number.

It is a Curzon 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, 28934 + ... + 31103.

It is an arithmetic number, because the mean of its divisors is an integer number (5763648).

Almost surely, 2^65140145 is an apocalyptic number.

It is an amenable number.

65140145 is a deficient number, since it is larger than the sum of its proper divisors (27078223).

65140145 is a wasteful number, since it uses less digits than its factorization.

65140145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60080.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 65140145 is about 8070.9444924371. The cubic root of 65140145 is about 402.3613348967.

The spelling of 65140145 in words is "sixty-five million, one hundred forty thousand, one hundred forty-five".