140768905 has 8 divisors (see below), whose sum is σ = 173488392. Its totient is φ = 109571328.

The previous prime is 140768899. The next prime is 140768921. The reversal of 140768905 is 509867041.

140768905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 88510464 + 52258441 = 9408^2 + 7229^2 .

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 140768905 - 2²⁷ = 6551177 is a prime.

It is a super-2 number, since 2×140768905² = 39631769229798050, which contains 22 as substring.

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, 380272 + ... + 380641.

It is an arithmetic number, because the mean of its divisors is an integer number (21686049).

Almost surely, 2^140768905 is an apocalyptic number.

It is an amenable number.

140768905 is a deficient number, since it is larger than the sum of its proper divisors (32719487).

140768905 is an equidigital number, since it uses as much as digits as its factorization.

140768905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760955.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 140768905 is about 11864.6072417084. The cubic root of 140768905 is about 520.1982786757.

The spelling of 140768905 in words is "one hundred forty million, seven hundred sixty-eight thousand, nine hundred five".