1066560157 has 4 divisors (see below), whose sum is σ = 1148603260. Its totient is φ = 984517056.

The previous prime is 1066560139. The next prime is 1066560191. The reversal of 1066560157 is 7510656601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 675272196 + 391287961 = 25986^2 + 19781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066560157 - 2¹⁵ = 1066527389 is a prime.

It is a super-2 number, since 2×1066560157² = 2275101136999729298, 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 (1066560107) 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, 41021532 + ... + 41021557.

It is an arithmetic number, because the mean of its divisors is an integer number (287150815).

Almost surely, 2^1066560157 is an apocalyptic number.

It is an amenable number.

1066560157 is a deficient number, since it is larger than the sum of its proper divisors (82043103).

1066560157 is an equidigital number, since it uses as much as digits as its factorization.

1066560157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82043102.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1066560157 is about 32658.2326068022. The cubic root of 1066560157 is about 1021.7119006585.

The spelling of 1066560157 in words is "one billion, sixty-six million, five hundred sixty thousand, one hundred fifty-seven".