671577 has 8 divisors (see below), whose sum is σ = 934464. Its totient is φ = 428208.

The previous prime is 671557. The next prime is 671581. The reversal of 671577 is 775176.

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

It is not a de Polignac number, because 671577 - 2¹⁶ = 606041 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 4798 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (116808).

2⁶⁷¹⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

671577 is a deficient number, since it is larger than the sum of its proper divisors (262887).

671577 is a wasteful number, since it uses less digits than its factorization.

671577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9759.

The product of its digits is 10290, while the sum is 33.

The square root of 671577 is about 819.4980170812. The cubic root of 671577 is about 87.5720006010.

The spelling of 671577 in words is "six hundred seventy-one thousand, five hundred seventy-seven".