61083666 has 64 divisors (see below), whose sum is σ = 158112000. Its totient is φ = 17117568.

The previous prime is 61083661. The next prime is 61083667. The reversal of 61083666 is 66638016.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61083666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61083661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18510 + ... + 21558.

It is an arithmetic number, because the mean of its divisors is an integer number (2470500).

Almost surely, 2^61083666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61083666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79056000).

61083666 is an abundant number, since it is smaller than the sum of its proper divisors (97028334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61083666 is a wasteful number, since it uses less digits than its factorization.

61083666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 61083666 is about 7815.6040073688. The cubic root of 61083666 is about 393.8296093001.

The spelling of 61083666 in words is "sixty-one million, eighty-three thousand, six hundred sixty-six".