906140 has 12 divisors (see below), whose sum is σ = 1902936. Its totient is φ = 362448.

The previous prime is 906133. The next prime is 906179. The reversal of 906140 is 41609.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 45307 = 906140 / (9 + 0 + 6 + 1 + 4 + 0).

It is an Ulam number.

It is a congruent number.

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, 22634 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (158578).

2⁹⁰⁶¹⁴⁰ is an apocalyptic number.

It is an amenable number.

906140 is an abundant number, since it is smaller than the sum of its proper divisors (996796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

906140 is a wasteful number, since it uses less digits than its factorization.

906140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45316 (or 45314 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 906140 is about 951.9138616493. The cubic root of 906140 is about 96.7680004878.

Adding to 906140 its reverse (41609), we get a palindrome (947749).

The spelling of 906140 in words is "nine hundred six thousand, one hundred forty".