65123207 has 4 divisors (see below), whose sum is σ = 65211600. Its totient is φ = 65034816.

The previous prime is 65123171. The next prime is 65123221. The reversal of 65123207 is 70232156.

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 65123207 - 2¹⁸ = 64861063 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 (65123237) 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, 43082 + ... + 44567.

It is an arithmetic number, because the mean of its divisors is an integer number (16302900).

Almost surely, 2^65123207 is an apocalyptic number.

65123207 is a deficient number, since it is larger than the sum of its proper divisors (88393).

65123207 is an equidigital number, since it uses as much as digits as its factorization.

65123207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88392.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65123207 is about 8069.8951046467. The cubic root of 65123207 is about 402.3264573412.

The spelling of 65123207 in words is "sixty-five million, one hundred twenty-three thousand, two hundred seven".