65340681 has 16 divisors (see below), whose sum is σ = 99744768. Its totient is φ = 37270800.

The previous prime is 65340659. The next prime is 65340689. The reversal of 65340681 is 18604356.

It is not a de Polignac number, because 65340681 - 2⁹ = 65340169 is a prime.

It is a super-2 number, since 2×65340681² = 8538809187087522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65340689) 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 15 ways as a sum of consecutive naturals, for example, 10786 + ... + 15716.

It is an arithmetic number, because the mean of its divisors is an integer number (6234048).

Almost surely, 2^65340681 is an apocalyptic number.

It is an amenable number.

65340681 is a deficient number, since it is larger than the sum of its proper divisors (34404087).

65340681 is a wasteful number, since it uses less digits than its factorization.

65340681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 65340681 is about 8083.3582748756. The cubic root of 65340681 is about 402.7738059562.

The spelling of 65340681 in words is "sixty-five million, three hundred forty thousand, six hundred eighty-one".