140063778 has 12 divisors (see below), whose sum is σ = 303471558. Its totient is φ = 46687920.

The previous prime is 140063723. The next prime is 140063851. The reversal of 140063778 is 877360041.

140063778 is a `hidden beast` number, since 14 + 0 + 0 + 637 + 7 + 8 = 666.

140063778 is digitally balanced in base 3, 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 only one way, i.e., 134026929 + 6036849 = 11577^2 + 2457^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3890643 + ... + 3890678.

Almost surely, 2^140063778 is an apocalyptic number.

140063778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140063778 is an abundant number, since it is smaller than the sum of its proper divisors (163407780).

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

140063778 is a wasteful number, since it uses less digits than its factorization.

140063778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781329 (or 7781326 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 140063778 is about 11834.8543717276. The cubic root of 140063778 is about 519.3282474739.

The spelling of 140063778 in words is "one hundred forty million, sixty-three thousand, seven hundred seventy-eight".