140740668 has 18 divisors (see below), whose sum is σ = 355761224. Its totient is φ = 46913544.

The previous prime is 140740667. The next prime is 140740687. The reversal of 140740668 is 866047041.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3909463 = 140740668 / (1 + 4 + 0 + 7 + 4 + 0 + 6 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140740667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1954696 + ... + 1954767.

Almost surely, 2^140740668 is an apocalyptic number.

140740668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140740668 is an abundant number, since it is smaller than the sum of its proper divisors (215020556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140740668 is a wasteful number, since it uses less digits than its factorization.

140740668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909473 (or 3909468 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 140740668 is about 11863.4172142768. The cubic root of 140740668 is about 520.1634939551.

The spelling of 140740668 in words is "one hundred forty million, seven hundred forty thousand, six hundred sixty-eight".