65140207 has 8 divisors (see below), whose sum is σ = 73354752. Its totient is φ = 57307800.

The previous prime is 65140193. The next prime is 65140211. The reversal of 65140207 is 70204156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65140207 - 2¹⁹ = 64615919 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 (65140247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95173 + ... + 95854.

It is an arithmetic number, because the mean of its divisors is an integer number (9169344).

Almost surely, 2^65140207 is an apocalyptic number.

65140207 is a deficient number, since it is larger than the sum of its proper divisors (8214545).

65140207 is a wasteful number, since it uses less digits than its factorization.

65140207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191069.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 65140207 is about 8070.9483333745. The cubic root of 65140207 is about 402.3614625517.

The spelling of 65140207 in words is "sixty-five million, one hundred forty thousand, two hundred seven".