671319450 has 36 divisors (see below), whose sum is σ = 1803612798. Its totient is φ = 179018400.

The previous prime is 671319449. The next prime is 671319487. The reversal of 671319450 is 54913176.

It can be written as a sum of positive squares in 3 ways, for example, as 428614209 + 242705241 = 20703^2 + 15579^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 745461 + ... + 746360.

Almost surely, 2^671319450 is an apocalyptic number.

671319450 is an abundant number, since it is smaller than the sum of its proper divisors (1132293348).

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

671319450 is a wasteful number, since it uses less digits than its factorization.

671319450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491839 (or 1491831 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 671319450 is about 25909.8330754947. The cubic root of 671319450 is about 875.6080453931.

The spelling of 671319450 in words is "six hundred seventy-one million, three hundred nineteen thousand, four hundred fifty".