1066251197 has 8 divisors (see below), whose sum is σ = 1169275392. Its totient is φ = 964242400.

The previous prime is 1066251187. The next prime is 1066251209. The reversal of 1066251197 is 7911526601.

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

It is not a de Polignac number, because 1066251197 - 2⁶ = 1066251133 is a prime.

It is a super-2 number, since 2×1066251197² = 2273783230207865618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066251197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066251157) 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, 251648 + ... + 255849.

It is an arithmetic number, because the mean of its divisors is an integer number (146159424).

Almost surely, 2^1066251197 is an apocalyptic number.

It is an amenable number.

1066251197 is a deficient number, since it is larger than the sum of its proper divisors (103024195).

1066251197 is a wasteful number, since it uses less digits than its factorization.

1066251197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507699.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1066251197 is about 32653.5020633316. The cubic root of 1066251197 is about 1021.6132349957.

Adding to 1066251197 its reverse (7911526601), we get a palindrome (8977777798).

The spelling of 1066251197 in words is "one billion, sixty-six million, two hundred fifty-one thousand, one hundred ninety-seven".