65464709 has 4 divisors (see below), whose sum is σ = 68910240. Its totient is φ = 62019180.

The previous prime is 65464681. The next prime is 65464723. The reversal of 65464709 is 90746456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65464709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65464799) 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, 1722737 + ... + 1722774.

It is an arithmetic number, because the mean of its divisors is an integer number (17227560).

Almost surely, 2^65464709 is an apocalyptic number.

It is an amenable number.

65464709 is a deficient number, since it is larger than the sum of its proper divisors (3445531).

65464709 is a wasteful number, since it uses less digits than its factorization.

65464709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445530.

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

The square root of 65464709 is about 8091.0264490978. The cubic root of 65464709 is about 403.0284898388.

The spelling of 65464709 in words is "sixty-five million, four hundred sixty-four thousand, seven hundred nine".