65491059 has 4 divisors (see below), whose sum is σ = 87321416. Its totient is φ = 43660704.

The previous prime is 65491057. The next prime is 65491061. The reversal of 65491059 is 95019456.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65491057) and next prime (65491061).

It is not a de Polignac number, because 65491059 - 2¹ = 65491057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65491057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10915174 + ... + 10915179.

It is an arithmetic number, because the mean of its divisors is an integer number (21830354).

Almost surely, 2^65491059 is an apocalyptic number.

65491059 is a deficient number, since it is larger than the sum of its proper divisors (21830357).

65491059 is a wasteful number, since it uses less digits than its factorization.

65491059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21830356.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 65491059 is about 8092.6546324429. The cubic root of 65491059 is about 403.0825565073.

The spelling of 65491059 in words is "sixty-five million, four hundred ninety-one thousand, fifty-nine".