101806612 has 12 divisors (see below), whose sum is σ = 178668756. Its totient is φ = 50758400.

The previous prime is 101806571. The next prime is 101806613. The reversal of 101806612 is 216608101.

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 73034116 = 5364^2 + 8546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101806613) 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, 34639 + ... + 37462.

It is an arithmetic number, because the mean of its divisors is an integer number (14889063).

Almost surely, 2^101806612 is an apocalyptic number.

It is an amenable number.

101806612 is a deficient number, since it is larger than the sum of its proper divisors (76862144).

101806612 is a wasteful number, since it uses less digits than its factorization.

101806612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72458 (or 72456 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 101806612 is about 10089.9262633579. The cubic root of 101806612 is about 466.9374009544.

The spelling of 101806612 in words is "one hundred one million, eight hundred six thousand, six hundred twelve".