671023642 has 8 divisors (see below), whose sum is σ = 1010250432. Its totient is φ = 334273500.

The previous prime is 671023637. The next prime is 671023649. The reversal of 671023642 is 246320176.

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

It is not an unprimeable number, because it can be changed into a prime (671023649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618484 + ... + 619567.

It is an arithmetic number, because the mean of its divisors is an integer number (126281304).

Almost surely, 2^671023642 is an apocalyptic number.

671023642 is a deficient number, since it is larger than the sum of its proper divisors (339226790).

671023642 is a wasteful number, since it uses less digits than its factorization.

671023642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238324.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 671023642 is about 25904.1240346011. The cubic root of 671023642 is about 875.4794181465.

The spelling of 671023642 in words is "six hundred seventy-one million, twenty-three thousand, six hundred forty-two".