140506705 has 8 divisors (see below), whose sum is σ = 171124992. Its totient is φ = 110727408.

The previous prime is 140506697. The next prime is 140506733. The reversal of 140506705 is 507605041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140506705 - 2³ = 140506697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209377 + ... + 210046.

It is an arithmetic number, because the mean of its divisors is an integer number (21390624).

Almost surely, 2^140506705 is an apocalyptic number.

It is an amenable number.

140506705 is a deficient number, since it is larger than the sum of its proper divisors (30618287).

140506705 is an equidigital number, since it uses as much as digits as its factorization.

140506705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419495.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 140506705 is about 11853.5524211099. The cubic root of 140506705 is about 519.8750994400.

The spelling of 140506705 in words is "one hundred forty million, five hundred six thousand, seven hundred five".