1066645634 has 8 divisors (see below), whose sum is σ = 1626197628. Its totient is φ = 524579760.

The previous prime is 1066645633. The next prime is 1066645667. The reversal of 1066645634 is 4365466601.

It can be written as a sum of positive squares in 2 ways, for example, as 1065826609 + 819025 = 32647^2 + 905^2 .

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

It is a super-2 number, since 2×1066645634² = 2275465817062523912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066645591 and 1066645600.

It is not an unprimeable number, because it can be changed into a prime (1066645633) 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, 4371377 + ... + 4371620.

Almost surely, 2^1066645634 is an apocalyptic number.

1066645634 is a deficient number, since it is larger than the sum of its proper divisors (559551994).

1066645634 is an equidigital number, since it uses as much as digits as its factorization.

1066645634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743060.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 1066645634 is about 32659.5412398888. The cubic root of 1066645634 is about 1021.7391941761.

The spelling of 1066645634 in words is "one billion, sixty-six million, six hundred forty-five thousand, six hundred thirty-four".