1040667659 has 2 divisors, whose sum is σ = 1040667660. Its totient is φ = 1040667658.

The previous prime is 1040667647. The next prime is 1040667707. The reversal of 1040667659 is 9567660401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040667659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040667629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520333829 + 520333830.

It is an arithmetic number, because the mean of its divisors is an integer number (520333830).

Almost surely, 2^1040667659 is an apocalyptic number.

1040667659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040667659 is an equidigital number, since it uses as much as digits as its factorization.

1040667659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1040667659 is about 32259.3809457032. The cubic root of 1040667659 is about 1013.3761667341.

The spelling of 1040667659 in words is "one billion, forty million, six hundred sixty-seven thousand, six hundred fifty-nine".