1660601121 has 8 divisors (see below), whose sum is σ = 2330668320. Its totient is φ = 1048800672.

The previous prime is 1660601119. The next prime is 1660601183. The reversal of 1660601121 is 1211060661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1660601121 - 2¹ = 1660601119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1660601091 and 1660601100.

It is not an unprimeable number, because it can be changed into a prime (1660601221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14566620 + ... + 14566733.

It is an arithmetic number, because the mean of its divisors is an integer number (291333540).

Almost surely, 2^1660601121 is an apocalyptic number.

It is an amenable number.

1660601121 is a deficient number, since it is larger than the sum of its proper divisors (670067199).

1660601121 is a wasteful number, since it uses less digits than its factorization.

1660601121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29133375.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1660601121 is about 40750.4738745453. The cubic root of 1660601121 is about 1184.1910532276.

Adding to 1660601121 its reverse (1211060661), we get a palindrome (2871661782).

The spelling of 1660601121 in words is "one billion, six hundred sixty million, six hundred one thousand, one hundred twenty-one".