65964407 has 4 divisors (see below), whose sum is σ = 65980656. Its totient is φ = 65948160.

The previous prime is 65964401. The next prime is 65964433. The reversal of 65964407 is 70446956.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65964407 - 2⁶ = 65964343 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 (65964401) 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 3 ways as a sum of consecutive naturals, for example, 3782 + ... + 12092.

It is an arithmetic number, because the mean of its divisors is an integer number (16495164).

Almost surely, 2^65964407 is an apocalyptic number.

65964407 is a deficient number, since it is larger than the sum of its proper divisors (16249).

65964407 is an equidigital number, since it uses as much as digits as its factorization.

65964407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16248.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 65964407 is about 8121.8475114964. The cubic root of 65964407 is about 404.0513426073.

The spelling of 65964407 in words is "sixty-five million, nine hundred sixty-four thousand, four hundred seven".