671149152 has 120 divisors (see below), whose sum is σ = 2001433896. Its totient is φ = 220589568.

The previous prime is 671149147. The next prime is 671149159. The reversal of 671149152 is 251941176.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671149159) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 187443 + ... + 190989.

Almost surely, 2^671149152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671149152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000716948).

671149152 is an abundant number, since it is smaller than the sum of its proper divisors (1330284744).

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

671149152 is a wasteful number, since it uses less digits than its factorization.

671149152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642 (or 3625 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 671149152 is about 25906.5465085565. The cubic root of 671149152 is about 875.5339987230.

The spelling of 671149152 in words is "six hundred seventy-one million, one hundred forty-nine thousand, one hundred fifty-two".