65401065 has 48 divisors (see below), whose sum is σ = 117841152. Its totient is φ = 33530112.

The previous prime is 65401033. The next prime is 65401067. The reversal of 65401065 is 56010456.

It is a happy number.

65401065 is a `hidden beast` number, since 654 + 0 + 1 + 0 + 6 + 5 = 666.

It is not a de Polignac number, because 65401065 - 2⁵ = 65401033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65401067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141024 + ... + 141486.

It is an arithmetic number, because the mean of its divisors is an integer number (2455024).

Almost surely, 2^65401065 is an apocalyptic number.

It is an amenable number.

65401065 is a deficient number, since it is larger than the sum of its proper divisors (52440087).

65401065 is a wasteful number, since it uses less digits than its factorization.

65401065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65401065 is about 8087.0924935974. The cubic root of 65401065 is about 402.8978410133.

The spelling of 65401065 in words is "sixty-five million, four hundred one thousand, sixty-five".