106863021 has 24 divisors (see below), whose sum is σ = 157275456. Its totient is φ = 69906240.

The previous prime is 106863013. The next prime is 106863047. The reversal of 106863021 is 120368601.

106863021 is a `hidden beast` number, since 1 + 0 + 6 + 8 + 630 + 21 = 666.

It is not a de Polignac number, because 106863021 - 2³ = 106863013 is a prime.

It is a super-2 number, since 2×106863021² = 22839410514492882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106863121) 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, 204066 + ... + 204588.

It is an arithmetic number, because the mean of its divisors is an integer number (6553144).

Almost surely, 2^106863021 is an apocalyptic number.

It is an amenable number.

106863021 is a deficient number, since it is larger than the sum of its proper divisors (50412435).

106863021 is a wasteful number, since it uses less digits than its factorization.

106863021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 106863021 is about 10337.4571824990. The cubic root of 106863021 is about 474.5432669741.

The spelling of 106863021 in words is "one hundred six million, eight hundred sixty-three thousand, twenty-one".