680123460 has 48 divisors (see below), whose sum is σ = 1911470400. Its totient is φ = 180687744.

The previous prime is 680123447. The next prime is 680123461. The reversal of 680123460 is 64321086.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (680123461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4930 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (39822300).

Almost surely, 2^680123460 is an apocalyptic number.

680123460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680123460 is an abundant number, since it is smaller than the sum of its proper divisors (1231346940).

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

680123460 is a wasteful number, since it uses less digits than its factorization.

680123460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42420 (or 42418 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 680123460 is about 26079.1767508102. The cubic root of 680123460 is about 879.4191500927.

The spelling of 680123460 in words is "six hundred eighty million, one hundred twenty-three thousand, four hundred sixty".