65491701 has 16 divisors (see below), whose sum is σ = 100865088. Its totient is φ = 37356800.

The previous prime is 65491697. The next prime is 65491703. The reversal of 65491701 is 10719456.

It is a cyclic number.

It is not a de Polignac number, because 65491701 - 2² = 65491697 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65491703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57810 + ... + 58931.

It is an arithmetic number, because the mean of its divisors is an integer number (6304068).

Almost surely, 2^65491701 is an apocalyptic number.

It is an amenable number.

65491701 is a deficient number, since it is larger than the sum of its proper divisors (35373387).

65491701 is a wasteful number, since it uses less digits than its factorization.

65491701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116772.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 65491701 is about 8092.6942979455. The cubic root of 65491701 is about 403.0838736243.

The spelling of 65491701 in words is "sixty-five million, four hundred ninety-one thousand, seven hundred one".