53685709 has 8 divisors (see below), whose sum is σ = 66932928. Its totient is φ = 41832960.

The previous prime is 53685701. The next prime is 53685713. The reversal of 53685709 is 90758635.

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 53685709 - 2³ = 53685701 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 (53685701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348532 + ... + 348685.

It is an arithmetic number, because the mean of its divisors is an integer number (8366616).

Almost surely, 2^53685709 is an apocalyptic number.

It is an amenable number.

53685709 is a deficient number, since it is larger than the sum of its proper divisors (13247219).

53685709 is a wasteful number, since it uses less digits than its factorization.

53685709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697235.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 53685709 is about 7327.0532275943. The cubic root of 53685709 is about 377.2415879831.

The spelling of 53685709 in words is "fifty-three million, six hundred eighty-five thousand, seven hundred nine".