601221671 has 4 divisors (see below), whose sum is σ = 602143032. Its totient is φ = 600300312.

The previous prime is 601221661. The next prime is 601221689. The reversal of 601221671 is 176122106.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-601221671 is a prime.

It is a super-2 number, since 2×601221671² = 722934995360064482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 601221671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601221641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459701 + ... + 461006.

It is an arithmetic number, because the mean of its divisors is an integer number (150535758).

Almost surely, 2^601221671 is an apocalyptic number.

601221671 is a deficient number, since it is larger than the sum of its proper divisors (921361).

601221671 is an equidigital number, since it uses as much as digits as its factorization.

601221671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921360.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 601221671 is about 24519.8220018009. The cubic root of 601221671 is about 844.0047201244.

Adding to 601221671 its reverse (176122106), we get a palindrome (777343777).

The spelling of 601221671 in words is "six hundred one million, two hundred twenty-one thousand, six hundred seventy-one".