102806071 has 4 divisors (see below), whose sum is σ = 103015944. Its totient is φ = 102596200.

The previous prime is 102806069. The next prime is 102806101. The reversal of 102806071 is 170608201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170608201 = 19 ⋅8979379.

It is a cyclic number.

It is not a de Polignac number, because 102806071 - 2¹ = 102806069 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 (102806971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104200 + ... + 105181.

It is an arithmetic number, because the mean of its divisors is an integer number (25753986).

Almost surely, 2^102806071 is an apocalyptic number.

102806071 is a deficient number, since it is larger than the sum of its proper divisors (209873).

102806071 is an equidigital number, since it uses as much as digits as its factorization.

102806071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209872.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 102806071 is about 10139.3328676003. The cubic root of 102806071 is about 468.4604385049.

The spelling of 102806071 in words is "one hundred two million, eight hundred six thousand, seventy-one".