906531 has 8 divisors (see below), whose sum is σ = 1213200. Its totient is φ = 602112.

The previous prime is 906523. The next prime is 906539. The reversal of 906531 is 135609.

906531 is a nontrivial binomial coefficient, being equal to C(1347, 2).

It is an interprime number because it is at equal distance from previous prime (906523) and next prime (906539).

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

It is not a de Polignac number, because 906531 - 2³ = 906523 is a prime.

It is a super-2 number, since 2×906531² = 1643596907922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (906539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (151650).

2⁹⁰⁶⁵³¹ is an apocalyptic number.

906531 is the 1346-th triangular number.

906531 is a deficient number, since it is larger than the sum of its proper divisors (306669).

906531 is a wasteful number, since it uses less digits than its factorization.

906531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 906531 is about 952.1192152246. The cubic root of 906531 is about 96.7819169714.

The spelling of 906531 in words is "nine hundred six thousand, five hundred thirty-one".