61113166 has 4 divisors (see below), whose sum is σ = 91669752. Its totient is φ = 30556582.

The previous prime is 61113161. The next prime is 61113209. The reversal of 61113166 is 66131116.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61113166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61113161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15278290 + ... + 15278293.

It is an arithmetic number, because the mean of its divisors is an integer number (22917438).

Almost surely, 2^61113166 is an apocalyptic number.

61113166 is a deficient number, since it is larger than the sum of its proper divisors (30556586).

61113166 is a wasteful number, since it uses less digits than its factorization.

61113166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30556585.

The product of its digits is 648, while the sum is 25.

The square root of 61113166 is about 7817.4910297358. The cubic root of 61113166 is about 393.8929983339.

The spelling of 61113166 in words is "sixty-one million, one hundred thirteen thousand, one hundred sixty-six".