140005667 has 2 divisors, whose sum is σ = 140005668. Its totient is φ = 140005666.

The previous prime is 140005651. The next prime is 140005687. The reversal of 140005667 is 766500041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140005667 - 2⁴ = 140005651 is a prime.

It is a super-2 number, since 2×140005667² = 39203173584229778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140005637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70002833 + 70002834.

It is an arithmetic number, because the mean of its divisors is an integer number (70002834).

Almost surely, 2^140005667 is an apocalyptic number.

140005667 is a deficient number, since it is larger than the sum of its proper divisors (1).

140005667 is an equidigital number, since it uses as much as digits as its factorization.

140005667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 140005667 is about 11832.3990382340. The cubic root of 140005667 is about 519.2564162487.

The spelling of 140005667 in words is "one hundred forty million, five thousand, six hundred sixty-seven".