706531 has 6 divisors (see below), whose sum is σ = 821940. Its totient is φ = 605556.

The previous prime is 706523. The next prime is 706547. The reversal of 706531 is 135607.

It is not a de Polignac number, because 706531 - 2³ = 706523 is a prime.

It is a super-2 number, since 2×706531² = 998372107922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (706561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7161 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (136990).

2⁷⁰⁶⁵³¹ is an apocalyptic number.

706531 is a deficient number, since it is larger than the sum of its proper divisors (115409).

706531 is a wasteful number, since it uses less digits than its factorization.

706531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14433 (or 14426 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 706531 is about 840.5539839891. The cubic root of 706531 is about 89.0656839531.

The spelling of 706531 in words is "seven hundred six thousand, five hundred thirty-one".