671500442 has 8 divisors (see below), whose sum is σ = 1066500756. Its totient is φ = 316000192.

The previous prime is 671500399. The next prime is 671500541. The reversal of 671500442 is 244005176.

It can be written as a sum of positive squares in 2 ways, for example, as 666620761 + 4879681 = 25819^2 + 2209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9874973 + ... + 9875040.

Almost surely, 2^671500442 is an apocalyptic number.

671500442 is a deficient number, since it is larger than the sum of its proper divisors (395000314).

671500442 is a wasteful number, since it uses less digits than its factorization.

671500442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19750032.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 671500442 is about 25913.3255681319. The cubic root of 671500442 is about 875.6867281579.

The spelling of 671500442 in words is "six hundred seventy-one million, five hundred thousand, four hundred forty-two".