102685919 has 12 divisors (see below), whose sum is σ = 123306048. Its totient is φ = 85176000.

The previous prime is 102685909. The next prime is 102685927. The reversal of 102685919 is 919586201.

It is a happy number.

It is not a de Polignac number, because 102685919 - 2⁴ = 102685903 is a prime.

It is a super-2 number, since 2×102685919² = 21088795921749122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102685909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32282 + ... + 35319.

It is an arithmetic number, because the mean of its divisors is an integer number (10275504).

Almost surely, 2^102685919 is an apocalyptic number.

102685919 is a deficient number, since it is larger than the sum of its proper divisors (20620129).

102685919 is an equidigital number, since it uses as much as digits as its factorization.

102685919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67646 (or 67639 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 102685919 is about 10133.4060907476. The cubic root of 102685919 is about 468.2778669243.

The spelling of 102685919 in words is "one hundred two million, six hundred eighty-five thousand, nine hundred nineteen".