671626236 has 24 divisors (see below), whose sum is σ = 1569517264. Its totient is φ = 223534080.

The previous prime is 671626217. The next prime is 671626237. The reversal of 671626236 is 632626176.

It is a junction number, because it is equal to n+sod(n) for n = 671626194 and 671626203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671626237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34405 + ... + 50268.

Almost surely, 2^671626236 is an apocalyptic number.

It is an amenable number.

671626236 is an abundant number, since it is smaller than the sum of its proper divisors (897891028).

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

671626236 is a wasteful number, since it uses less digits than its factorization.

671626236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85341 (or 85339 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 671626236 is about 25915.7526612676. The cubic root of 671626236 is about 875.7414063341.

The spelling of 671626236 in words is "six hundred seventy-one million, six hundred twenty-six thousand, two hundred thirty-six".