1066645455 has 16 divisors (see below), whose sum is σ = 1707293184. Its totient is φ = 568657440.

The previous prime is 1066645429. The next prime is 1066645477. The reversal of 1066645455 is 5545466601.

It is not a de Polignac number, because 1066645455 - 2⁵ = 1066645423 is a prime.

It is a super-2 number, since 2×1066645455² = 2275465053344314050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30990 + ... + 55620.

It is an arithmetic number, because the mean of its divisors is an integer number (106705824).

Almost surely, 2^1066645455 is an apocalyptic number.

1066645455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066645455 is a deficient number, since it is larger than the sum of its proper divisors (640647729).

1066645455 is a wasteful number, since it uses less digits than its factorization.

1066645455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27526.

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 1066645455 is about 32659.5384994951. The cubic root of 1066645455 is about 1021.7391370214.

The spelling of 1066645455 in words is "one billion, sixty-six million, six hundred forty-five thousand, four hundred fifty-five".