671673306 has 8 divisors (see below), whose sum is σ = 1343346624. Its totient is φ = 223891100.

The previous prime is 671673271. The next prime is 671673307. The reversal of 671673306 is 603376176.

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

671673306 is an admirable number.

It is a super-2 number, since 2×671673306² = 902290059985939272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671673307) 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, 55972770 + ... + 55972781.

It is an arithmetic number, because the mean of its divisors is an integer number (167918328).

Almost surely, 2^671673306 is an apocalyptic number.

671673306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671673306 is a wasteful number, since it uses less digits than its factorization.

671673306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111945556.

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 671673306 is about 25916.6607802780. The cubic root of 671673306 is about 875.7618642331.

The spelling of 671673306 in words is "six hundred seventy-one million, six hundred seventy-three thousand, three hundred six".