140724767689 has 27 divisors (see below), whose sum is σ = 157333172871. Its totient is φ = 125774592240.

The previous prime is 140724767683. The next prime is 140724767717. The reversal of 140724767689 is 986767427041.

The square root of 140724767689 is 375133.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 114435388089 + 26289379600 = 338283^2 + 162140^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140724767689 is a prime.

It is a super-2 number, since 2×140724767689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140724767683) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 276472767 + ... + 276473275.

Almost surely, 2^140724767689 is an apocalyptic number.

140724767689 is the 375133-rd square number.

140724767689 is the 187567-th centered octagonal number.

It is an amenable number.

140724767689 is a deficient number, since it is larger than the sum of its proper divisors (16608405182).

140724767689 is an frugal number, since it uses more digits than its factorization.

140724767689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 61.

The spelling of 140724767689 in words is "one hundred forty billion, seven hundred twenty-four million, seven hundred sixty-seven thousand, six hundred eighty-nine".