689452026480 has 480 divisors, whose sum is σ = 2768333172480. Its totient is φ = 157256225280.

The previous prime is 689452026463. The next prime is 689452026511. The reversal of 689452026480 is 84620254986.

689452026480 is a `hidden beast` number, since 6 + 8 + 94 + 52 + 0 + 26 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51960807 + ... + 51974073.

It is an arithmetic number, because the mean of its divisors is an integer number (5767360776).

Almost surely, 2^689452026480 is an apocalyptic number.

689452026480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689452026480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384166586240).

689452026480 is an abundant number, since it is smaller than the sum of its proper divisors (2078881146000).

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

689452026480 is a wasteful number, since it uses less digits than its factorization.

689452026480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794 (or 13775 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 689452026480 in words is "six hundred eighty-nine billion, four hundred fifty-two million, twenty-six thousand, four hundred eighty".