671239296 has 384 divisors, whose sum is σ = 2509852800. Its totient is φ = 167215104.

The previous prime is 671239279. The next prime is 671239297. The reversal of 671239296 is 692932176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (671239297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1991640 + ... + 1991976.

It is an arithmetic number, because the mean of its divisors is an integer number (6536075).

Almost surely, 2^671239296 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 671239296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254926400).

671239296 is an abundant number, since it is smaller than the sum of its proper divisors (1838613504).

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

671239296 is a wasteful number, since it uses less digits than its factorization.

671239296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 381 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 671239296 is about 25908.2862420501. The cubic root of 671239296 is about 875.5731954764.

The spelling of 671239296 in words is "six hundred seventy-one million, two hundred thirty-nine thousand, two hundred ninety-six".