1040666567 has 4 divisors (see below), whose sum is σ = 1041366960. Its totient is φ = 1039966176.

The previous prime is 1040666513. The next prime is 1040666569. The reversal of 1040666567 is 7656660401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7656660401 = 13 ⋅588973877.

It is a cyclic number.

It is not a de Polignac number, because 1040666567 - 2¹⁴ = 1040650183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040666569) 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, 347963 + ... + 350940.

It is an arithmetic number, because the mean of its divisors is an integer number (260341740).

Almost surely, 2^1040666567 is an apocalyptic number.

1040666567 is a deficient number, since it is larger than the sum of its proper divisors (700393).

1040666567 is an equidigital number, since it uses as much as digits as its factorization.

1040666567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700392.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1040666567 is about 32259.3640203895. The cubic root of 1040666567 is about 1013.3758122798.

The spelling of 1040666567 in words is "one billion, forty million, six hundred sixty-six thousand, five hundred sixty-seven".