102987666 has 64 divisors (see below), whose sum is σ = 248054400. Its totient is φ = 31546368.

The previous prime is 102987653. The next prime is 102987667. The reversal of 102987666 is 666789201.

It is not an unprimeable number, because it can be changed into a prime (102987667) 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, 38170 + ... + 40778.

It is an arithmetic number, because the mean of its divisors is an integer number (3875850).

Almost surely, 2^102987666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102987666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124027200).

102987666 is an abundant number, since it is smaller than the sum of its proper divisors (145066734).

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

102987666 is a wasteful number, since it uses less digits than its factorization.

102987666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 102987666 is about 10148.2838943341. The cubic root of 102987666 is about 468.7361032680.

The spelling of 102987666 in words is "one hundred two million, nine hundred eighty-seven thousand, six hundred sixty-six".