1066951345 has 4 divisors (see below), whose sum is σ = 1280341620. Its totient is φ = 853561072.

The previous prime is 1066951337. The next prime is 1066951363. The reversal of 1066951345 is 5431596601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5431596601 = 181 ⋅30008821.

It can be written as a sum of positive squares in 2 ways, for example, as 669826161 + 397125184 = 25881^2 + 19928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066951345 - 2³ = 1066951337 is a prime.

It is a super-2 number, since 2×1066951345² = 2276770345194618050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1066951298 and 1066951307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106695130 + ... + 106695139.

It is an arithmetic number, because the mean of its divisors is an integer number (320085405).

Almost surely, 2^1066951345 is an apocalyptic number.

It is an amenable number.

1066951345 is a deficient number, since it is larger than the sum of its proper divisors (213390275).

1066951345 is an equidigital number, since it uses as much as digits as its factorization.

1066951345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213390274.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1066951345 is about 32664.2211754697. The cubic root of 1066951345 is about 1021.8367983113.

The spelling of 1066951345 in words is "one billion, sixty-six million, nine hundred fifty-one thousand, three hundred forty-five".