671747676 has 24 divisors (see below), whose sum is σ = 1567945344. Its totient is φ = 223839600.

The previous prime is 671747623. The next prime is 671747723. The reversal of 671747676 is 676747176.

It is a super-2 number, since 2×671747676² = 902489880422801952, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 35751 + ... + 51201.

It is an arithmetic number, because the mean of its divisors is an integer number (65331056).

Almost surely, 2^671747676 is an apocalyptic number.

It is an amenable number.

671747676 is an abundant number, since it is smaller than the sum of its proper divisors (896197668).

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

671747676 is a wasteful number, since it uses less digits than its factorization.

671747676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19081 (or 19079 counting only the distinct ones).

The product of its digits is 2074464, while the sum is 51.

The square root of 671747676 is about 25918.0955318866. The cubic root of 671747676 is about 875.7941855047.

The spelling of 671747676 in words is "six hundred seventy-one million, seven hundred forty-seven thousand, six hundred seventy-six".