65913409 has 8 divisors (see below), whose sum is σ = 68192000. Its totient is φ = 63644400.

The previous prime is 65913401. The next prime is 65913427. The reversal of 65913409 is 90431956.

65913409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65913409 - 2³ = 65913401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65913401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13339 + ... + 17599.

It is an arithmetic number, because the mean of its divisors is an integer number (8524000).

Almost surely, 2^65913409 is an apocalyptic number.

It is an amenable number.

65913409 is a deficient number, since it is larger than the sum of its proper divisors (2278591).

65913409 is a wasteful number, since it uses less digits than its factorization.

65913409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 65913409 is about 8118.7073478479. The cubic root of 65913409 is about 403.9471898588.

It can be divided in two parts, 6591 and 3409, that added together give a 4-th power (10000 = 10⁴).

The spelling of 65913409 in words is "sixty-five million, nine hundred thirteen thousand, four hundred nine".