671061 has 16 divisors (see below), whose sum is σ = 962240. Its totient is φ = 414720.

The previous prime is 671059. The next prime is 671063. The reversal of 671061 is 160176.

671061 is a nontrivial binomial coefficient, being equal to C(1159, 2).

It is an interprime number because it is at equal distance from previous prime (671059) and next prime (671063).

It is not a de Polignac number, because 671061 - 2¹ = 671059 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3381 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (60140).

2⁶⁷¹⁰⁶¹ is an apocalyptic number.

671061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

671061 is the 1158-th triangular number.

It is an amenable number.

671061 is a deficient number, since it is larger than the sum of its proper divisors (291179).

671061 is a wasteful number, since it uses less digits than its factorization.

671061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 671061 is about 819.1831297091. The cubic root of 671061 is about 87.5495664744.

It can be divided in two parts, 67 and 1061, that added together give a triangular number (1128 = T₄₇).

The spelling of 671061 in words is "six hundred seventy-one thousand, sixty-one".