140805667 has 2 divisors, whose sum is σ = 140805668. Its totient is φ = 140805666.

The previous prime is 140805661. The next prime is 140805697. The reversal of 140805667 is 766508041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140805667 is a prime.

It is equal to p_7955056 and since 140805667 and 7955056 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140805661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70402833 + 70402834.

It is an arithmetic number, because the mean of its divisors is an integer number (70402834).

Almost surely, 2^140805667 is an apocalyptic number.

140805667 is a deficient number, since it is larger than the sum of its proper divisors (1).

140805667 is an equidigital number, since it uses as much as digits as its factorization.

140805667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 140805667 is about 11866.1563701141. The cubic root of 140805667 is about 520.2435582414.

The spelling of 140805667 in words is "one hundred forty million, eight hundred five thousand, six hundred sixty-seven".