671797214 has 16 divisors (see below), whose sum is σ = 1100050416. Its totient is φ = 305155200.

The previous prime is 671797183. The next prime is 671797237. The reversal of 671797214 is 412797176.

It is a super-2 number, since 2×671797214² = 902622993476323592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25574 + ... + 44694.

It is an arithmetic number, because the mean of its divisors is an integer number (68753151).

Almost surely, 2^671797214 is an apocalyptic number.

671797214 is a deficient number, since it is larger than the sum of its proper divisors (428253202).

671797214 is a wasteful number, since it uses less digits than its factorization.

671797214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20731.

The product of its digits is 148176, while the sum is 44.

The square root of 671797214 is about 25919.0511786215. The cubic root of 671797214 is about 875.8157134422.

The spelling of 671797214 in words is "six hundred seventy-one million, seven hundred ninety-seven thousand, two hundred fourteen".