671038894 has 4 divisors (see below), whose sum is σ = 1006558344. Its totient is φ = 335519446.

The previous prime is 671038891. The next prime is 671038897. The reversal of 671038894 is 498830176.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (671038891) and next prime (671038897).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671038891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167759722 + ... + 167759725.

It is an arithmetic number, because the mean of its divisors is an integer number (251639586).

Almost surely, 2^671038894 is an apocalyptic number.

671038894 is a deficient number, since it is larger than the sum of its proper divisors (335519450).

671038894 is a wasteful number, since it uses less digits than its factorization.

671038894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335519449.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 671038894 is about 25904.4184262068. The cubic root of 671038894 is about 875.4860511522.

It can be divided in two parts, 67 and 1038894, that added together give a triangular number (1038961 = T₁₄₄₁).

The spelling of 671038894 in words is "six hundred seventy-one million, thirty-eight thousand, eight hundred ninety-four".