671380512 has 48 divisors (see below), whose sum is σ = 1922592672. Its totient is φ = 203448320.

The previous prime is 671380433. The next prime is 671380519. The reversal of 671380512 is 215083176.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (671380519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316833 + ... + 318944.

It is an arithmetic number, because the mean of its divisors is an integer number (40054014).

Almost surely, 2^671380512 is an apocalyptic number.

It is an amenable number.

671380512 is an abundant number, since it is smaller than the sum of its proper divisors (1251212160).

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

671380512 is a wasteful number, since it uses less digits than its factorization.

671380512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635801 (or 635793 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 671380512 is about 25911.0114044203. The cubic root of 671380512 is about 875.6345924950.

It can be divided in two parts, 671 and 380512, that multiplied together give a palindrome (255323552).

The spelling of 671380512 in words is "six hundred seventy-one million, three hundred eighty thousand, five hundred twelve".