102065665 has 8 divisors (see below), whose sum is σ = 131900328. Its totient is φ = 75371520.

The previous prime is 102065659. The next prime is 102065683. The reversal of 102065665 is 566560201.

It can be written as a sum of positive squares in 4 ways, for example, as 318096 + 101747569 = 564^2 + 10087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102065665 - 2³ = 102065657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785056 + ... + 785185.

It is an arithmetic number, because the mean of its divisors is an integer number (16487541).

Almost surely, 2^102065665 is an apocalyptic number.

It is an amenable number.

102065665 is a deficient number, since it is larger than the sum of its proper divisors (29834663).

102065665 is a wasteful number, since it uses less digits than its factorization.

102065665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570259.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 102065665 is about 10102.7553172390. The cubic root of 102065665 is about 467.3331155319. Note that the first 3 decimals are identical.

The spelling of 102065665 in words is "one hundred two million, sixty-five thousand, six hundred sixty-five".