601001660 has 36 divisors (see below), whose sum is σ = 1468163592. Its totient is φ = 206057376.

The previous prime is 601001659. The next prime is 601001717. The reversal of 601001660 is 66100106.

It is a super-2 number, since 2×601001660² = 722405990645511200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305654 + ... + 307613.

It is an arithmetic number, because the mean of its divisors is an integer number (40782322).

Almost surely, 2^601001660 is an apocalyptic number.

It is an amenable number.

601001660 is an abundant number, since it is smaller than the sum of its proper divisors (867161932).

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

601001660 is a wasteful number, since it uses less digits than its factorization.

601001660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613290 (or 613281 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 601001660 is about 24515.3352006453. The cubic root of 601001660 is about 843.9017558953.

Adding to 601001660 its reverse (66100106), we get a palindrome (667101766).

The spelling of 601001660 in words is "six hundred one million, one thousand, six hundred sixty".