61863286 has 4 divisors (see below), whose sum is σ = 92794932. Its totient is φ = 30931642.

The previous prime is 61863281. The next prime is 61863287. The reversal of 61863286 is 68236816.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61863281) by changing a digit.

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 as a sum of consecutive naturals, namely, 15465820 + ... + 15465823.

It is an arithmetic number, because the mean of its divisors is an integer number (23198733).

Almost surely, 2^61863286 is an apocalyptic number.

61863286 is a deficient number, since it is larger than the sum of its proper divisors (30931646).

61863286 is a wasteful number, since it uses less digits than its factorization.

61863286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30931645.

The product of its digits is 82944, while the sum is 40.

The square root of 61863286 is about 7865.3217353138. The cubic root of 61863286 is about 395.4980333331.

The spelling of 61863286 in words is "sixty-one million, eight hundred sixty-three thousand, two hundred eighty-six".