671236 has 6 divisors (see below), whose sum is σ = 1174670. Its totient is φ = 335616.

The previous prime is 671233. The next prime is 671249. The reversal of 671236 is 632176.

It can be written as a sum of positive squares in only one way, i.e., 577600 + 93636 = 760^2 + 306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 671236.

It is not an unprimeable number, because it can be changed into a prime (671233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83901 + ... + 83908.

2⁶⁷¹²³⁶ is an apocalyptic number.

It is an amenable number.

671236 is a deficient number, since it is larger than the sum of its proper divisors (503434).

671236 is a wasteful number, since it uses less digits than its factorization.

671236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167813 (or 167811 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 671236 is about 819.2899364694. The cubic root of 671236 is about 87.5571762359.

Subtracting from 671236 its reverse (632176), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 671236 in words is "six hundred seventy-one thousand, two hundred thirty-six".