671494968 has 192 divisors, whose sum is σ = 2051251200. Its totient is φ = 203281920.

The previous prime is 671494939. The next prime is 671494991. The reversal of 671494968 is 869494176.

671494968 is a `hidden beast` number, since 6 + 7 + 149 + 496 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1934971 + ... + 1935317.

It is an arithmetic number, because the mean of its divisors is an integer number (10683600).

Almost surely, 2^671494968 is an apocalyptic number.

671494968 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671494968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025625600).

671494968 is an abundant number, since it is smaller than the sum of its proper divisors (1379756232).

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

671494968 is a wasteful number, since it uses less digits than its factorization.

671494968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 400 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 671494968 is about 25913.2199465832. The cubic root of 671494968 is about 875.6843486499.

The spelling of 671494968 in words is "six hundred seventy-one million, four hundred ninety-four thousand, nine hundred sixty-eight".