671903650 has 96 divisors (see below), whose sum is σ = 1450353600. Its totient is φ = 229017600.

The previous prime is 671903647. The next prime is 671903651. The reversal of 671903650 is 56309176.

It is not an unprimeable number, because it can be changed into a prime (671903651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1180566 + ... + 1181134.

It is an arithmetic number, because the mean of its divisors is an integer number (15107850).

Almost surely, 2^671903650 is an apocalyptic number.

671903650 is an abundant number, since it is smaller than the sum of its proper divisors (778449950).

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

671903650 is a wasteful number, since it uses less digits than its factorization.

671903650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 671903650 is about 25921.1043360425. The cubic root of 671903650 is about 875.8619642040.

The spelling of 671903650 in words is "six hundred seventy-one million, nine hundred three thousand, six hundred fifty".