1066457405 has 16 divisors (see below), whose sum is σ = 1410245760. Its totient is φ = 769220928.

The previous prime is 1066457393. The next prime is 1066457407. The reversal of 1066457405 is 5047546601.

It is a cyclic number.

It is not a de Polignac number, because 1066457405 - 2¹⁰ = 1066456381 is a prime.

It is a super-2 number, since 2×1066457405² = 2274662793358668050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066457407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187985 + ... + 193574.

It is an arithmetic number, because the mean of its divisors is an integer number (88140360).

Almost surely, 2^1066457405 is an apocalyptic number.

It is an amenable number.

1066457405 is a deficient number, since it is larger than the sum of its proper divisors (343788355).

1066457405 is a wasteful number, since it uses less digits than its factorization.

1066457405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381620.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 1066457405 is about 32656.6594280554. The cubic root of 1066457405 is about 1021.6790891594.

The spelling of 1066457405 in words is "one billion, sixty-six million, four hundred fifty-seven thousand, four hundred five".