671042988 has 384 divisors, whose sum is σ = 2374041600. Its totient is φ = 158630400.

The previous prime is 671042987. The next prime is 671043047. The reversal of 671042988 is 889240176.

It is not an unprimeable number, because it can be changed into a prime (671042987) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4898056 + ... + 4898192.

It is an arithmetic number, because the mean of its divisors is an integer number (6182400).

Almost surely, 2^671042988 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 671042988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187020800).

671042988 is an abundant number, since it is smaller than the sum of its proper divisors (1702998612).

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

671042988 is a wasteful number, since it uses less digits than its factorization.

671042988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 671042988 is about 25904.4974473546. The cubic root of 671042988 is about 875.4878315917.

The spelling of 671042988 in words is "six hundred seventy-one million, forty-two thousand, nine hundred eighty-eight".