671607 has 6 divisors (see below), whose sum is σ = 970112. Its totient is φ = 447732.

The previous prime is 671603. The next prime is 671609. The reversal of 671607 is 706176.

It is not a de Polignac number, because 671607 - 2² = 671603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671603) 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, 37303 + ... + 37320.

2⁶⁷¹⁶⁰⁷ is an apocalyptic number.

671607 is a deficient number, since it is larger than the sum of its proper divisors (298505).

671607 is a wasteful number, since it uses less digits than its factorization.

671607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74629 (or 74626 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 671607 is about 819.5163207649. The cubic root of 671607 is about 87.5733045572.

The spelling of 671607 in words is "six hundred seventy-one thousand, six hundred seven".