1660224261 has 8 divisors (see below), whose sum is σ = 2216018880. Its totient is φ = 1105622912.

The previous prime is 1660224259. The next prime is 1660224337. The reversal of 1660224261 is 1624220661.

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

It is a cyclic number.

It is not a de Polignac number, because 1660224261 - 2¹ = 1660224259 is a prime.

It is a super-2 number, since 2×1660224261² = 5512689193625992242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660224211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295065 + ... + 300638.

It is an arithmetic number, because the mean of its divisors is an integer number (277002360).

Almost surely, 2^1660224261 is an apocalyptic number.

It is an amenable number.

1660224261 is a deficient number, since it is larger than the sum of its proper divisors (555794619).

1660224261 is an equidigital number, since it uses as much as digits as its factorization.

1660224261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596635.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1660224261 is about 40745.8496168628. The cubic root of 1660224261 is about 1184.1014655880.

The spelling of 1660224261 in words is "one billion, six hundred sixty million, two hundred twenty-four thousand, two hundred sixty-one".