671934 has 16 divisors (see below), whose sum is σ = 1369872. Its totient is φ = 219648.

The previous prime is 671933. The next prime is 671939. The reversal of 671934 is 439176.

671934 = T₁₃₂ + T₁₃₃ + ... + T₁₈₄.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671933) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 1374.

It is an arithmetic number, because the mean of its divisors is an integer number (85617).

2⁶⁷¹⁹³⁴ is an apocalyptic number.

671934 is an abundant number, since it is smaller than the sum of its proper divisors (697938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671934 is a wasteful number, since it uses less digits than its factorization.

671934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its digits is 4536, while the sum is 30.

The square root of 671934 is about 819.7158044103. The cubic root of 671934 is about 87.5875151616.

The spelling of 671934 in words is "six hundred seventy-one thousand, nine hundred thirty-four".