65345091 has 32 divisors (see below), whose sum is σ = 104755200. Its totient is φ = 35441280.

The previous prime is 65345069. The next prime is 65345101. The reversal of 65345091 is 19054356.

It is a happy number.

65345091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65345091 - 2⁷ = 65344963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65345011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36270 + ... + 38028.

It is an arithmetic number, because the mean of its divisors is an integer number (3273600).

Almost surely, 2^65345091 is an apocalyptic number.

65345091 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

65345091 is a deficient number, since it is larger than the sum of its proper divisors (39410109).

65345091 is a wasteful number, since it uses less digits than its factorization.

65345091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 65345091 is about 8083.6310529365. The cubic root of 65345091 is about 402.7828671439.

The spelling of 65345091 in words is "sixty-five million, three hundred forty-five thousand, ninety-one".