61189685 has 8 divisors (see below), whose sum is σ = 73809240. Its totient is φ = 48697344.

The previous prime is 61189679. The next prime is 61189697. The reversal of 61189685 is 58698116.

It can be written as a sum of positive squares in 4 ways, for example, as 334084 + 60855601 = 578^2 + 7801^2 .

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 61189685 - 2⁴ = 61189669 is a prime.

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, 30740 + ... + 32669.

It is an arithmetic number, because the mean of its divisors is an integer number (9226155).

Almost surely, 2^61189685 is an apocalyptic number.

It is an amenable number.

61189685 is a deficient number, since it is larger than the sum of its proper divisors (12619555).

61189685 is a wasteful number, since it uses less digits than its factorization.

61189685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63607.

The product of its digits is 103680, while the sum is 44.

The square root of 61189685 is about 7822.3835881399. The cubic root of 61189685 is about 394.0573258683.

The spelling of 61189685 in words is "sixty-one million, one hundred eighty-nine thousand, six hundred eighty-five".