65147985 has 24 divisors (see below), whose sum is σ = 129055680. Its totient is φ = 29781792.

The previous prime is 65147963. The next prime is 65147989. The reversal of 65147985 is 58974156.

It is not a de Polignac number, because 65147985 - 2⁶ = 65147921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65147985.

It is not an unprimeable number, because it can be changed into a prime (65147989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103095 + ... + 103724.

It is an arithmetic number, because the mean of its divisors is an integer number (5377320).

Almost surely, 2^65147985 is an apocalyptic number.

It is an amenable number.

65147985 is a deficient number, since it is larger than the sum of its proper divisors (63907695).

65147985 is a wasteful number, since it uses less digits than its factorization.

65147985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206837 (or 206834 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 65147985 is about 8071.4301706699. The cubic root of 65147985 is about 402.3774764344.

The spelling of 65147985 in words is "sixty-five million, one hundred forty-seven thousand, nine hundred eighty-five".