671527 has 4 divisors (see below), whose sum is σ = 680800. Its totient is φ = 662256.

The previous prime is 671519. The next prime is 671533. The reversal of 671527 is 725176.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 671527 - 2³ = 671519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671495 and 671504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4527 + ... + 4672.

It is an arithmetic number, because the mean of its divisors is an integer number (170200).

2⁶⁷¹⁵²⁷ is an apocalyptic number.

671527 is a deficient number, since it is larger than the sum of its proper divisors (9273).

671527 is an equidigital number, since it uses as much as digits as its factorization.

671527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272.

The product of its digits is 2940, while the sum is 28.

The square root of 671527 is about 819.4675100332. The cubic root of 671527 is about 87.5698272544.

The spelling of 671527 in words is "six hundred seventy-one thousand, five hundred twenty-seven".