102661908 has 12 divisors (see below), whose sum is σ = 239544480. Its totient is φ = 34220632.

The previous prime is 102661907. The next prime is 102661913. The reversal of 102661908 is 809166201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102661907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277568 + ... + 4277591.

It is an arithmetic number, because the mean of its divisors is an integer number (19962040).

Almost surely, 2^102661908 is an apocalyptic number.

It is an amenable number.

102661908 is an abundant number, since it is smaller than the sum of its proper divisors (136882572).

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

102661908 is a wasteful number, since it uses less digits than its factorization.

102661908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555166 (or 8555164 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 102661908 is about 10132.2212766994. The cubic root of 102661908 is about 468.2413650148.

The spelling of 102661908 in words is "one hundred two million, six hundred sixty-one thousand, nine hundred eight".