671629400 has 48 divisors (see below), whose sum is σ = 1681663200. Its totient is φ = 247985280.

The previous prime is 671629381. The next prime is 671629433. The reversal of 671629400 is 4926176.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 126560 + ... + 131759.

It is an arithmetic number, because the mean of its divisors is an integer number (35034650).

Almost surely, 2^671629400 is an apocalyptic number.

It is an amenable number.

671629400 is an abundant number, since it is smaller than the sum of its proper divisors (1010033800).

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

671629400 is a wasteful number, since it uses less digits than its factorization.

671629400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258348 (or 258339 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 671629400 is about 25915.8137051492. The cubic root of 671629400 is about 875.7427815243.

The spelling of 671629400 in words is "six hundred seventy-one million, six hundred twenty-nine thousand, four hundred".