689127539240 has 32 divisors (see below), whose sum is σ = 1772042244480. Its totient is φ = 236272299072.

The previous prime is 689127539239. The next prime is 689127539257. The reversal of 689127539240 is 42935721986.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230584612 + ... + 1230585171.

It is an arithmetic number, because the mean of its divisors is an integer number (55376320140).

It is a 1-persistent number, because it is pandigital, but 2⋅689127539240 = 1378255078480 is not.

Almost surely, 2^689127539240 is an apocalyptic number.

It is an amenable number.

689127539240 is an abundant number, since it is smaller than the sum of its proper divisors (1082914705240).

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

689127539240 is a wasteful number, since it uses less digits than its factorization.

689127539240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461169801 (or 2461169797 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 689127539240 in words is "six hundred eighty-nine billion, one hundred twenty-seven million, five hundred thirty-nine thousand, two hundred forty".