140631867 has 12 divisors (see below), whose sum is σ = 211967184. Its totient is φ = 89678160.

The previous prime is 140631859. The next prime is 140631889. The reversal of 140631867 is 768136041.

140631867 is a `hidden beast` number, since 14 + 0 + 631 + 8 + 6 + 7 = 666.

It is not a de Polignac number, because 140631867 - 2³ = 140631859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140631847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339484 + ... + 339897.

It is an arithmetic number, because the mean of its divisors is an integer number (17663932).

Almost surely, 2^140631867 is an apocalyptic number.

140631867 is a deficient number, since it is larger than the sum of its proper divisors (71335317).

140631867 is a wasteful number, since it uses less digits than its factorization.

140631867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679410 (or 679407 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 140631867 is about 11858.8307602394. The cubic root of 140631867 is about 520.0294201796.

The spelling of 140631867 in words is "one hundred forty million, six hundred thirty-one thousand, eight hundred sixty-seven".