689895137760 has 48 divisors (see below), whose sum is σ = 2173169685456. Its totient is φ = 183972036608.

The previous prime is 689895137749. The next prime is 689895137773. The reversal of 689895137760 is 67731598986.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×689895137760² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 718640289 + ... + 718641248.

It is an arithmetic number, because the mean of its divisors is an integer number (45274368447).

Almost surely, 2^689895137760 is an apocalyptic number.

689895137760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689895137760 is an abundant number, since it is smaller than the sum of its proper divisors (1483274547696).

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

689895137760 is a wasteful number, since it uses less digits than its factorization.

689895137760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437281555 (or 1437281547 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 69.

The spelling of 689895137760 in words is "six hundred eighty-nine billion, eight hundred ninety-five million, one hundred thirty-seven thousand, seven hundred sixty".