65340451 has 16 divisors (see below), whose sum is σ = 74118240. Its totient is φ = 57057280.

The previous prime is 65340437. The next prime is 65340479. The reversal of 65340451 is 15404356.

It is a cyclic number.

It is not a de Polignac number, because 65340451 - 2²⁵ = 31786019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65340491) 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, 81585 + ... + 82381.

It is an arithmetic number, because the mean of its divisors is an integer number (4632390).

Almost surely, 2^65340451 is an apocalyptic number.

65340451 is a deficient number, since it is larger than the sum of its proper divisors (8777789).

65340451 is a wasteful number, since it uses less digits than its factorization.

65340451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65340451 is about 8083.3440481029. The cubic root of 65340451 is about 402.7733333660.

The spelling of 65340451 in words is "sixty-five million, three hundred forty thousand, four hundred fifty-one".