61142686 has 16 divisors (see below), whose sum is σ = 100197360. Its totient is φ = 27751680.

The previous prime is 61142681. The next prime is 61142699. The reversal of 61142686 is 68624116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61142681) 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, 17710 + ... + 20878.

It is an arithmetic number, because the mean of its divisors is an integer number (6262335).

Almost surely, 2^61142686 is an apocalyptic number.

61142686 is a deficient number, since it is larger than the sum of its proper divisors (39054674).

61142686 is a wasteful number, since it uses less digits than its factorization.

61142686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059.

The product of its digits is 13824, while the sum is 34.

The square root of 61142686 is about 7819.3788755885. The cubic root of 61142686 is about 393.9564099268.

The spelling of 61142686 in words is "sixty-one million, one hundred forty-two thousand, six hundred eighty-six".