671030642 has 4 divisors (see below), whose sum is σ = 1006545966. Its totient is φ = 335515320.

The previous prime is 671030629. The next prime is 671030663. The reversal of 671030642 is 246030176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 670240321 + 790321 = 25889^2 + 889^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167757659 + ... + 167757662.

Almost surely, 2^671030642 is an apocalyptic number.

671030642 is a deficient number, since it is larger than the sum of its proper divisors (335515324).

671030642 is a wasteful number, since it uses less digits than its factorization.

671030642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335515323.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 671030642 is about 25904.2591478699. The cubic root of 671030642 is about 875.4824624181.

The spelling of 671030642 in words is "six hundred seventy-one million, thirty thousand, six hundred forty-two".