61568135 has 8 divisors (see below), whose sum is σ = 78227856. Its totient is φ = 46357120.

The previous prime is 61568123. The next prime is 61568149. The reversal of 61568135 is 53186516.

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

It is not a de Polignac number, because 61568135 - 2⁶ = 61568071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61568095 and 61568104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362081 + ... + 362250.

It is an arithmetic number, because the mean of its divisors is an integer number (9778482).

Almost surely, 2^61568135 is an apocalyptic number.

61568135 is a deficient number, since it is larger than the sum of its proper divisors (16659721).

61568135 is a wasteful number, since it uses less digits than its factorization.

61568135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724353.

The product of its digits is 21600, while the sum is 35.

The square root of 61568135 is about 7846.5364970795. The cubic root of 61568135 is about 394.8680539908.

The spelling of 61568135 in words is "sixty-one million, five hundred sixty-eight thousand, one hundred thirty-five".