8120906 has 8 divisors (see below), whose sum is σ = 12220740. Its totient is φ = 4047328.

The previous prime is 8120891. The next prime is 8120921. The reversal of 8120906 is 6090218.

It is an interprime number because it is at equal distance from previous prime (8120891) and next prime (8120921).

It can be written as a sum of positive squares in 2 ways, for example, as 7070281 + 1050625 = 2659^2 + 1025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8120906² = 131898228521672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5771 + ... + 7038.

Almost surely, 2^8120906 is an apocalyptic number.

8120906 is a deficient number, since it is larger than the sum of its proper divisors (4099834).

8120906 is a wasteful number, since it uses less digits than its factorization.

8120906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13128.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 8120906 is about 2849.7203371559. The cubic root of 8120906 is about 201.0025164079.

The spelling of 8120906 in words is "eight million, one hundred twenty thousand, nine hundred six".