102691863 has 24 divisors (see below), whose sum is σ = 151860800. Its totient is φ = 66852864.

The previous prime is 102691861. The next prime is 102691873. The reversal of 102691863 is 368196201.

It is not a de Polignac number, because 102691863 - 2¹ = 102691861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102691861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68223 + ... + 69711.

Almost surely, 2^102691863 is an apocalyptic number.

102691863 is a deficient number, since it is larger than the sum of its proper divisors (49168937).

102691863 is a wasteful number, since it uses less digits than its factorization.

102691863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 102691863 is about 10133.6993738713. The cubic root of 102691863 is about 468.2869022103.

The spelling of 102691863 in words is "one hundred two million, six hundred ninety-one thousand, eight hundred sixty-three".