102265666 has 4 divisors (see below), whose sum is σ = 153398502. Its totient is φ = 51132832.

The previous prime is 102265661. The next prime is 102265679. The reversal of 102265666 is 666562201.

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

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 23571025 = 8871^2 + 4855^2 .

It is not an unprimeable number, because it can be changed into a prime (102265661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25566415 + ... + 25566418.

Almost surely, 2^102265666 is an apocalyptic number.

102265666 is a deficient number, since it is larger than the sum of its proper divisors (51132836).

102265666 is an equidigital number, since it uses as much as digits as its factorization.

102265666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51132835.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 102265666 is about 10112.6488122549. The cubic root of 102265666 is about 467.6381678601.

The spelling of 102265666 in words is "one hundred two million, two hundred sixty-five thousand, six hundred sixty-six".