140314661 has 4 divisors (see below), whose sum is σ = 140757612. Its totient is φ = 139871712.

The previous prime is 140314637. The next prime is 140314663. The reversal of 140314661 is 166413041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166413041 = 47 ⋅3540703.

It can be written as a sum of positive squares in 2 ways, for example, as 46321636 + 93993025 = 6806^2 + 9695^2 .

It is a cyclic number.

It is not a de Polignac number, because 140314661 - 2⁶ = 140314597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140314661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140314663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221000 + ... + 221633.

It is an arithmetic number, because the mean of its divisors is an integer number (35189403).

Almost surely, 2^140314661 is an apocalyptic number.

It is an amenable number.

140314661 is a deficient number, since it is larger than the sum of its proper divisors (442951).

140314661 is an equidigital number, since it uses as much as digits as its factorization.

140314661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442950.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 140314661 is about 11845.4489573000. The cubic root of 140314661 is about 519.6381370482.

The spelling of 140314661 in words is "one hundred forty million, three hundred fourteen thousand, six hundred sixty-one".