140798664 has 72 divisors (see below), whose sum is σ = 402530310. Its totient is φ = 44454528.

The previous prime is 140798629. The next prime is 140798731. The reversal of 140798664 is 466897041.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 2924100 = 11742^2 + 1710^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 23284 + ... + 28700.

Almost surely, 2^140798664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140798664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201265155).

140798664 is an abundant number, since it is smaller than the sum of its proper divisors (261731646).

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

140798664 is a wasteful number, since it uses less digits than its factorization.

140798664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467 (or 5441 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 140798664 is about 11865.8612835310. The cubic root of 140798664 is about 520.2349332901.

The spelling of 140798664 in words is "one hundred forty million, seven hundred ninety-eight thousand, six hundred sixty-four".