671377126 has 12 divisors (see below), whose sum is σ = 1171484748. Its totient is φ = 287733012.

The previous prime is 671377121. The next prime is 671377127. The reversal of 671377126 is 621773176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671377121) 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, 3425296 + ... + 3425491.

It is an arithmetic number, because the mean of its divisors is an integer number (97623729).

Almost surely, 2^671377126 is an apocalyptic number.

671377126 is a deficient number, since it is larger than the sum of its proper divisors (500107622).

671377126 is a wasteful number, since it uses less digits than its factorization.

671377126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850803 (or 6850796 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 671377126 is about 25910.9460653215. The cubic root of 671377126 is about 875.6331204516.

The spelling of 671377126 in words is "six hundred seventy-one million, three hundred seventy-seven thousand, one hundred twenty-six".