102257665 has 8 divisors (see below), whose sum is σ = 125320320. Its totient is φ = 80065392.

The previous prime is 102257663. The next prime is 102257681. The reversal of 102257665 is 566752201.

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

It is a cyclic number.

It is not a de Polignac number, because 102257665 - 2¹ = 102257663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102257665.

It is not an unprimeable number, because it can be changed into a prime (102257663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217335 + ... + 217804.

It is an arithmetic number, because the mean of its divisors is an integer number (15665040).

Almost surely, 2^102257665 is an apocalyptic number.

It is an amenable number.

102257665 is a deficient number, since it is larger than the sum of its proper divisors (23062655).

102257665 is an equidigital number, since it uses as much as digits as its factorization.

102257665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435191.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 102257665 is about 10112.2532108329. The cubic root of 102257665 is about 467.6259719436.

The spelling of 102257665 in words is "one hundred two million, two hundred fifty-seven thousand, six hundred sixty-five".