140164641 has 16 divisors (see below), whose sum is σ = 211057920. Its totient is φ = 91910160.

The previous prime is 140164639. The next prime is 140164663. The reversal of 140164641 is 146461041.

140164641 is a `hidden beast` number, since 1 + 4 + 0 + 16 + 4 + 641 = 666.

It is not a de Polignac number, because 140164641 - 2¹ = 140164639 is a prime.

It is a super-2 number, since 2×140164641² = 39292253173317762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (140164601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40905 + ... + 44198.

It is an arithmetic number, because the mean of its divisors is an integer number (13191120).

Almost surely, 2^140164641 is an apocalyptic number.

It is an amenable number.

140164641 is a deficient number, since it is larger than the sum of its proper divisors (70893279).

140164641 is an equidigital number, since it uses as much as digits as its factorization.

140164641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85173 (or 85167 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140164641 is about 11839.1148740098. The cubic root of 140164641 is about 519.4528774514.

The spelling of 140164641 in words is "one hundred forty million, one hundred sixty-four thousand, six hundred forty-one".