671617582 has 4 divisors (see below), whose sum is σ = 1007426376. Its totient is φ = 335808790.

The previous prime is 671617553. The next prime is 671617651. The reversal of 671617582 is 285716176.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167904394 + ... + 167904397.

It is an arithmetic number, because the mean of its divisors is an integer number (251856594).

Almost surely, 2^671617582 is an apocalyptic number.

671617582 is a deficient number, since it is larger than the sum of its proper divisors (335808794).

671617582 is a wasteful number, since it uses less digits than its factorization.

671617582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335808793.

The product of its digits is 141120, while the sum is 43.

The square root of 671617582 is about 25915.5856966421. The cubic root of 671617582 is about 875.7376449669.

The spelling of 671617582 in words is "six hundred seventy-one million, six hundred seventeen thousand, five hundred eighty-two".