61666102 has 4 divisors (see below), whose sum is σ = 92499156. Its totient is φ = 30833050.

The previous prime is 61666097. The next prime is 61666103. The reversal of 61666102 is 20166616.

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 (61666103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15416524 + ... + 15416527.

It is an arithmetic number, because the mean of its divisors is an integer number (23124789).

Almost surely, 2^61666102 is an apocalyptic number.

61666102 is a deficient number, since it is larger than the sum of its proper divisors (30833054).

61666102 is a wasteful number, since it uses less digits than its factorization.

61666102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30833053.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 61666102 is about 7852.7767063632. The cubic root of 61666102 is about 395.0773805566.

The spelling of 61666102 in words is "sixty-one million, six hundred sixty-six thousand, one hundred two".