140215693 has 4 divisors (see below), whose sum is σ = 140251708. Its totient is φ = 140179680.

The previous prime is 140215679. The next prime is 140215709. The reversal of 140215693 is 396512041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57805609 + 82410084 = 7603^2 + 9078^2 .

It is a cyclic number.

It is not a de Polignac number, because 140215693 - 2¹⁷ = 140084621 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 (140218693) 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 3 ways as a sum of consecutive naturals, for example, 11346 + ... + 20227.

It is an arithmetic number, because the mean of its divisors is an integer number (35062927).

Almost surely, 2^140215693 is an apocalyptic number.

It is an amenable number.

140215693 is a deficient number, since it is larger than the sum of its proper divisors (36015).

140215693 is an equidigital number, since it uses as much as digits as its factorization.

140215693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36014.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 140215693 is about 11841.2707510638. The cubic root of 140215693 is about 519.5159363634.

The spelling of 140215693 in words is "one hundred forty million, two hundred fifteen thousand, six hundred ninety-three".