140780664 has 24 divisors (see below), whose sum is σ = 381281160. Its totient is φ = 46926864.

The previous prime is 140780639. The next prime is 140780669. The reversal of 140780664 is 466087041.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140780669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 977572 + ... + 977715.

It is an arithmetic number, because the mean of its divisors is an integer number (15886715).

Almost surely, 2^140780664 is an apocalyptic number.

It is an amenable number.

140780664 is an abundant number, since it is smaller than the sum of its proper divisors (240500496).

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

140780664 is a wasteful number, since it uses less digits than its factorization.

140780664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955299 (or 1955292 counting only the distinct ones).

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

The square root of 140780664 is about 11865.1027808443. The cubic root of 140780664 is about 520.2127630327.

The spelling of 140780664 in words is "one hundred forty million, seven hundred eighty thousand, six hundred sixty-four".