1066501215 has 64 divisors (see below), whose sum is σ = 2107822080. Its totient is φ = 508083840.

The previous prime is 1066501181. The next prime is 1066501229. The reversal of 1066501215 is 5121056601.

It is a happy number.

1066501215 is a `hidden beast` number, since 1 + 0 + 6 + 650 + 1 + 2 + 1 + 5 = 666.

It is not a de Polignac number, because 1066501215 - 2⁹ = 1066500703 is a prime.

It is a super-2 number, since 2×1066501215² = 2274849683192952450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44604 + ... + 64206.

It is an arithmetic number, because the mean of its divisors is an integer number (32934720).

Almost surely, 2^1066501215 is an apocalyptic number.

1066501215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066501215 is a deficient number, since it is larger than the sum of its proper divisors (1041320865).

1066501215 is a wasteful number, since it uses less digits than its factorization.

1066501215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19661 (or 19655 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1066501215 is about 32657.3301878767. The cubic root of 1066501215 is about 1021.6930791378.

Adding to 1066501215 its reverse (5121056601), we get a palindrome (6187557816).

The spelling of 1066501215 in words is "one billion, sixty-six million, five hundred one thousand, two hundred fifteen".