671670358 has 4 divisors (see below), whose sum is σ = 1007505540. Its totient is φ = 335835178.

The previous prime is 671670347. The next prime is 671670359. The reversal of 671670358 is 853076176.

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

It is a super-2 number, since 2×671670358² = 902282139631696328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671670359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167917588 + ... + 167917591.

It is an arithmetic number, because the mean of its divisors is an integer number (251876385).

Almost surely, 2^671670358 is an apocalyptic number.

671670358 is a deficient number, since it is larger than the sum of its proper divisors (335835182).

671670358 is a wasteful number, since it uses less digits than its factorization.

671670358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335835181.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 671670358 is about 25916.6039056046. The cubic root of 671670358 is about 875.7605829804.

The spelling of 671670358 in words is "six hundred seventy-one million, six hundred seventy thousand, three hundred fifty-eight".