671588146 has 4 divisors (see below), whose sum is σ = 1007382222. Its totient is φ = 335794072.

The previous prime is 671588129. The next prime is 671588153. The reversal of 671588146 is 641885176.

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., 515063025 + 156525121 = 22695^2 + 12511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 671588096 and 671588105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167897035 + ... + 167897038.

Almost surely, 2^671588146 is an apocalyptic number.

671588146 is a deficient number, since it is larger than the sum of its proper divisors (335794076).

671588146 is a wasteful number, since it uses less digits than its factorization.

671588146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335794075.

The product of its digits is 322560, while the sum is 46.

The square root of 671588146 is about 25915.0177696254. The cubic root of 671588146 is about 875.7248506870.

The spelling of 671588146 in words is "six hundred seventy-one million, five hundred eighty-eight thousand, one hundred forty-six".