1066172059 has 8 divisors (see below), whose sum is σ = 1077448032. Its totient is φ = 1054910400.

The previous prime is 1066172047. The next prime is 1066172083. The reversal of 1066172059 is 9502716601.

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 1066172059 - 2²³ = 1057783451 is a prime.

It is a super-2 number, since 2×1066172059² = 2273445718784598962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066172089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215002 + ... + 219904.

It is an arithmetic number, because the mean of its divisors is an integer number (134681004).

Almost surely, 2^1066172059 is an apocalyptic number.

1066172059 is a deficient number, since it is larger than the sum of its proper divisors (11275973).

1066172059 is a wasteful number, since it uses less digits than its factorization.

1066172059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1066172059 is about 32652.2902565808. The cubic root of 1066172059 is about 1021.5879593918.

The spelling of 1066172059 in words is "one billion, sixty-six million, one hundred seventy-two thousand, fifty-nine".