601121660 has 24 divisors (see below), whose sum is σ = 1268904336. Its totient is φ = 239201280.

The previous prime is 601121627. The next prime is 601121671. The reversal of 601121660 is 66121106.

It is a super-2 number, since 2×601121660² = 722694500242311200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74006 + ... + 81725.

It is an arithmetic number, because the mean of its divisors is an integer number (52871014).

Almost surely, 2^601121660 is an apocalyptic number.

It is an amenable number.

601121660 is an abundant number, since it is smaller than the sum of its proper divisors (667782676).

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

601121660 is a wasteful number, since it uses less digits than its factorization.

601121660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155933 (or 155931 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 601121660 is about 24517.7825261584. The cubic root of 601121660 is about 843.9579185086.

Adding to 601121660 its reverse (66121106), we get a palindrome (667242766).

The spelling of 601121660 in words is "six hundred one million, one hundred twenty-one thousand, six hundred sixty".