671377512 has 48 divisors (see below), whose sum is σ = 1817497440. Its totient is φ = 206576448.

The previous prime is 671377507. The next prime is 671377513. The reversal of 671377512 is 215773176.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (671377513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78708 + ... + 86819.

It is an arithmetic number, because the mean of its divisors is an integer number (37864530).

Almost surely, 2^671377512 is an apocalyptic number.

It is an amenable number.

671377512 is an abundant number, since it is smaller than the sum of its proper divisors (1146119928).

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

671377512 is a wasteful number, since it uses less digits than its factorization.

671377512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165562 (or 165545 counting only the distinct ones).

The product of its digits is 61740, while the sum is 39.

The square root of 671377512 is about 25910.9535139099. The cubic root of 671377512 is about 875.6332882631.

The spelling of 671377512 in words is "six hundred seventy-one million, three hundred seventy-seven thousand, five hundred twelve".