61689286 has 16 divisors (see below), whose sum is σ = 97062336. Its totient is φ = 29370816.

The previous prime is 61689281. The next prime is 61689317. The reversal of 61689286 is 68298616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61689281) 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, 5391 + ... + 12346.

It is an arithmetic number, because the mean of its divisors is an integer number (6066396).

Almost surely, 2^61689286 is an apocalyptic number.

61689286 is a deficient number, since it is larger than the sum of its proper divisors (35373050).

61689286 is a wasteful number, since it uses less digits than its factorization.

61689286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17823.

The product of its digits is 248832, while the sum is 46.

The square root of 61689286 is about 7854.2527333923. The cubic root of 61689286 is about 395.1268854768.

The spelling of 61689286 in words is "sixty-one million, six hundred eighty-nine thousand, two hundred eighty-six".