65142655 has 4 divisors (see below), whose sum is σ = 78171192. Its totient is φ = 52114120.

The previous prime is 65142653. The next prime is 65142703. The reversal of 65142655 is 55624156.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65142655 - 2¹ = 65142653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65142655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6514261 + ... + 6514270.

It is an arithmetic number, because the mean of its divisors is an integer number (19542798).

Almost surely, 2^65142655 is an apocalyptic number.

65142655 is a deficient number, since it is larger than the sum of its proper divisors (13028537).

65142655 is a wasteful number, since it uses less digits than its factorization.

65142655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13028536.

The product of its digits is 36000, while the sum is 34.

The square root of 65142655 is about 8071.0999869906. The cubic root of 65142655 is about 402.3665028004.

The spelling of 65142655 in words is "sixty-five million, one hundred forty-two thousand, six hundred fifty-five".