1066616311 has 4 divisors (see below), whose sum is σ = 1067296824. Its totient is φ = 1065935800.

The previous prime is 1066616269. The next prime is 1066616321. The reversal of 1066616311 is 1136166601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1136166601 = 173 ⋅6567437.

It is a cyclic number.

It is not a de Polignac number, because 1066616311 - 2¹⁵ = 1066583543 is a prime.

It is a super-2 number, since 2×1066616311² = 2275340709782497442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066616321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337900 + ... + 341041.

It is an arithmetic number, because the mean of its divisors is an integer number (266824206).

Almost surely, 2^1066616311 is an apocalyptic number.

1066616311 is a deficient number, since it is larger than the sum of its proper divisors (680513).

1066616311 is an equidigital number, since it uses as much as digits as its factorization.

1066616311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680512.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1066616311 is about 32659.0923174543. The cubic root of 1066616311 is about 1021.7298312624.

The spelling of 1066616311 in words is "one billion, sixty-six million, six hundred sixteen thousand, three hundred eleven".