140005655 has 16 divisors (see below), whose sum is σ = 169725024. Its totient is φ = 110866560.

The previous prime is 140005651. The next prime is 140005667. The reversal of 140005655 is 556500041.

It is not a de Polignac number, because 140005655 - 2² = 140005651 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 (140005651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332345 + ... + 332765.

It is an arithmetic number, because the mean of its divisors is an integer number (10607814).

Almost surely, 2^140005655 is an apocalyptic number.

140005655 is a deficient number, since it is larger than the sum of its proper divisors (29719369).

140005655 is a wasteful number, since it uses less digits than its factorization.

140005655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 140005655 is about 11832.3985311517. The cubic root of 140005655 is about 519.2564014134.

Adding to 140005655 its reverse (556500041), we get a palindrome (696505696).

The spelling of 140005655 in words is "one hundred forty million, five thousand, six hundred fifty-five".