1066298407 has 4 divisors (see below), whose sum is σ = 1068073216. Its totient is φ = 1064523600.

The previous prime is 1066298393. The next prime is 1066298459. The reversal of 1066298407 is 7048926601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7048926601 = 79 ⋅89226919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066298407 is a prime.

It is a super-2 number, since 2×1066298407² = 2273984585541475298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066698407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886503 + ... + 887704.

It is an arithmetic number, because the mean of its divisors is an integer number (267018304).

Almost surely, 2^1066298407 is an apocalyptic number.

1066298407 is a deficient number, since it is larger than the sum of its proper divisors (1774809).

1066298407 is an equidigital number, since it uses as much as digits as its factorization.

1066298407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774808.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1066298407 is about 32654.2249486954. The cubic root of 1066298407 is about 1021.6283126338.

The spelling of 1066298407 in words is "one billion, sixty-six million, two hundred ninety-eight thousand, four hundred seven".