140640886 has 8 divisors (see below), whose sum is σ = 211025880. Its totient is φ = 70298928.

The previous prime is 140640859. The next prime is 140640901. The reversal of 140640886 is 688046041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711 + ... + 16786.

It is an arithmetic number, because the mean of its divisors is an integer number (26378235).

Almost surely, 2^140640886 is an apocalyptic number.

140640886 is a deficient number, since it is larger than the sum of its proper divisors (70384994).

140640886 is a wasteful number, since it uses less digits than its factorization.

140640886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21518.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 140640886 is about 11859.2110192879. The cubic root of 140640886 is about 520.0405367807.

The spelling of 140640886 in words is "one hundred forty million, six hundred forty thousand, eight hundred eighty-six".