671995368 has 192 divisors, whose sum is σ = 2057140800. Its totient is φ = 196439040.

The previous prime is 671995367. The next prime is 671995391. The reversal of 671995368 is 863599176.

It is a super-2 number, since 2×671995368² = 903155549226910848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671995367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3411046 + ... + 3411242.

It is an arithmetic number, because the mean of its divisors is an integer number (10714275).

Almost surely, 2^671995368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671995368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028570400).

671995368 is an abundant number, since it is smaller than the sum of its proper divisors (1385145432).

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

671995368 is a wasteful number, since it uses less digits than its factorization.

671995368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 345 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 671995368 is about 25922.8734518379. The cubic root of 671995368 is about 875.9018154796.

The spelling of 671995368 in words is "six hundred seventy-one million, nine hundred ninety-five thousand, three hundred sixty-eight".