1066540450 has 24 divisors (see below), whose sum is σ = 2025977472. Its totient is φ = 417538320.

The previous prime is 1066540427. The next prime is 1066540451. The reversal of 1066540450 is 540456601.

It is a super-2 number, since 2×1066540450² = 2275017062972405000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066540451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224574 + ... + 229273.

It is an arithmetic number, because the mean of its divisors is an integer number (84415728).

Almost surely, 2^1066540450 is an apocalyptic number.

1066540450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066540450 is a deficient number, since it is larger than the sum of its proper divisors (959437022).

1066540450 is a wasteful number, since it uses less digits than its factorization.

1066540450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453906 (or 453901 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1066540450 is about 32657.9308897548. The cubic root of 1066540450 is about 1021.7056078425.

It can be divided in two parts, 10665 and 40450, that added together give a palindrome (51115).

The spelling of 1066540450 in words is "one billion, sixty-six million, five hundred forty thousand, four hundred fifty".