672571 has 4 divisors (see below), whose sum is σ = 712152. Its totient is φ = 632992.

The previous prime is 672557. The next prime is 672577. The reversal of 672571 is 175276.

672571 = T₆₀ + T₆₁ + ... + T₁₆₁.

672571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 672571 - 2⁷ = 672443 is a prime.

It is a Duffinian number.

672571 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (672577) 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, 19765 + ... + 19798.

It is an arithmetic number, because the mean of its divisors is an integer number (178038).

2⁶⁷²⁵⁷¹ is an apocalyptic number.

672571 is a deficient number, since it is larger than the sum of its proper divisors (39581).

672571 is a wasteful number, since it uses less digits than its factorization.

672571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39580.

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

The square root of 672571 is about 820.1042616643. The cubic root of 672571 is about 87.6151843600.

The spelling of 672571 in words is "six hundred seventy-two thousand, five hundred seventy-one".