1066724465 has 8 divisors (see below), whose sum is σ = 1286568360. Its totient is φ = 849046912.

The previous prime is 1066724459. The next prime is 1066724471. The reversal of 1066724465 is 5644276601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1066724459) and next prime (1066724471).

It can be written as a sum of positive squares in 4 ways, for example, as 755590144 + 311134321 = 27488^2 + 17639^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1066724465 - 2⁸ = 1066724209 is a prime.

It is a super-2 number, since 2×1066724465² = 2275802168459072450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540500 + ... + 542469.

It is an arithmetic number, because the mean of its divisors is an integer number (160821045).

Almost surely, 2^1066724465 is an apocalyptic number.

It is an amenable number.

1066724465 is a deficient number, since it is larger than the sum of its proper divisors (219843895).

1066724465 is a wasteful number, since it uses less digits than its factorization.

1066724465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083171.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 1066724465 is about 32660.7480777768. The cubic root of 1066724465 is about 1021.7643642781.

The spelling of 1066724465 in words is "one billion, sixty-six million, seven hundred twenty-four thousand, four hundred sixty-five".