65820967 has 4 divisors (see below), whose sum is σ = 67944256. Its totient is φ = 63697680.

The previous prime is 65820941. The next prime is 65820971. The reversal of 65820967 is 76902856.

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

It is a cyclic number.

It is not a de Polignac number, because 65820967 - 2¹¹ = 65818919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65820907) 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, 1061598 + ... + 1061659.

It is an arithmetic number, because the mean of its divisors is an integer number (16986064).

Almost surely, 2^65820967 is an apocalyptic number.

65820967 is a deficient number, since it is larger than the sum of its proper divisors (2123289).

65820967 is a wasteful number, since it uses less digits than its factorization.

65820967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123288.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 65820967 is about 8113.0122026286. The cubic root of 65820967 is about 403.7582593754.

The spelling of 65820967 in words is "sixty-five million, eight hundred twenty thousand, nine hundred sixty-seven".