1066168657 has 4 divisors (see below), whose sum is σ = 1112523840. Its totient is φ = 1019813476.

The previous prime is 1066168643. The next prime is 1066168721. The reversal of 1066168657 is 7568616601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1066168657 - 2¹¹ = 1066166609 is a prime.

It is a super-2 number, since 2×1066168657² = 2273431210338367298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066168057) 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, 23177557 + ... + 23177602.

It is an arithmetic number, because the mean of its divisors is an integer number (278130960).

Almost surely, 2^1066168657 is an apocalyptic number.

It is an amenable number.

1066168657 is a deficient number, since it is larger than the sum of its proper divisors (46355183).

1066168657 is an equidigital number, since it uses as much as digits as its factorization.

1066168657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46355182.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1066168657 is about 32652.2381621842. The cubic root of 1066168657 is about 1021.5868728111.

The spelling of 1066168657 in words is "one billion, sixty-six million, one hundred sixty-eight thousand, six hundred fifty-seven".