671582742 has 8 divisors (see below), whose sum is σ = 1343165496. Its totient is φ = 223860912.

The previous prime is 671582719. The next prime is 671582749. The reversal of 671582742 is 247285176.

It is a sphenic number, since it is the product of 3 distinct primes.

671582742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 671582694 and 671582703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671582749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55965223 + ... + 55965234.

It is an arithmetic number, because the mean of its divisors is an integer number (167895687).

Almost surely, 2^671582742 is an apocalyptic number.

671582742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

671582742 is a wasteful number, since it uses less digits than its factorization.

671582742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111930462.

The product of its digits is 188160, while the sum is 42.

The square root of 671582742 is about 25914.9135055473. The cubic root of 671582742 is about 875.7225018121.

The spelling of 671582742 in words is "six hundred seventy-one million, five hundred eighty-two thousand, seven hundred forty-two".