65142645 has 32 divisors (see below), whose sum is σ = 108307584. Its totient is φ = 33408000.

The previous prime is 65142641. The next prime is 65142653. The reversal of 65142645 is 54624156.

It is not a de Polignac number, because 65142645 - 2² = 65142641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44170 + ... + 45620.

It is an arithmetic number, because the mean of its divisors is an integer number (3384612).

Almost surely, 2^65142645 is an apocalyptic number.

It is an amenable number.

65142645 is a deficient number, since it is larger than the sum of its proper divisors (43164939).

65142645 is a wasteful number, since it uses less digits than its factorization.

65142645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573.

The product of its digits is 28800, while the sum is 33.

The square root of 65142645 is about 8071.0993674964. The cubic root of 65142645 is about 402.3664822114.

The spelling of 65142645 in words is "sixty-five million, one hundred forty-two thousand, six hundred forty-five".