601601660 has 24 divisors (see below), whose sum is σ = 1378215216. Its totient is φ = 218764160.

The previous prime is 601601657. The next prime is 601601681. The reversal of 601601660 is 66106106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367057 + ... + 1367496.

It is an arithmetic number, because the mean of its divisors is an integer number (57425634).

Almost surely, 2^601601660 is an apocalyptic number.

It is an amenable number.

601601660 is an abundant number, since it is smaller than the sum of its proper divisors (776613556).

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

601601660 is a wasteful number, since it uses less digits than its factorization.

601601660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734573 (or 2734571 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 601601660 is about 24527.5693863049. The cubic root of 601601660 is about 844.1824942479.

Adding to 601601660 its reverse (66106106), we get a palindrome (667707766).

The spelling of 601601660 in words is "six hundred one million, six hundred one thousand, six hundred sixty".