61601135 has 8 divisors (see below), whose sum is σ = 77812080. Its totient is φ = 46687104.

The previous prime is 61601093. The next prime is 61601179. The reversal of 61601135 is 53110616.

It is a happy number.

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

It is not a de Polignac number, because 61601135 - 2¹⁰ = 61600111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61601135.

It is a congruent number.

It is an unprimeable number.

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, 324122 + ... + 324311.

It is an arithmetic number, because the mean of its divisors is an integer number (9726510).

Almost surely, 2^61601135 is an apocalyptic number.

61601135 is a deficient number, since it is larger than the sum of its proper divisors (16210945).

61601135 is a wasteful number, since it uses less digits than its factorization.

61601135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648457.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 61601135 is about 7848.6390540017. The cubic root of 61601135 is about 394.9385900366.

The spelling of 61601135 in words is "sixty-one million, six hundred one thousand, one hundred thirty-five".