689427180 has 384 divisors, whose sum is σ = 2514758400. Its totient is φ = 155271168.

The previous prime is 689427173. The next prime is 689427181. The reversal of 689427180 is 81724986.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (689427181) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6324966 + ... + 6325074.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^689427180 is an apocalyptic number.

689427180 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 689427180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257379200).

689427180 is an abundant number, since it is smaller than the sum of its proper divisors (1825331220).

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

689427180 is a wasteful number, since it uses less digits than its factorization.

689427180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 689427180 is about 26256.9453668929. The cubic root of 689427180 is about 883.4109952683.

The spelling of 689427180 in words is "six hundred eighty-nine million, four hundred twenty-seven thousand, one hundred eighty".