680017612 has 24 divisors (see below), whose sum is σ = 1300682880. Its totient is φ = 309684480.

The previous prime is 680017567. The next prime is 680017621. The reversal of 680017612 is 216710086.

It is a Harshad number since it is a multiple of its sum of digits (31).

680017612 is a modest number, since divided by 17612 gives 680 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159187 + ... + 163402.

It is an arithmetic number, because the mean of its divisors is an integer number (54195120).

Almost surely, 2^680017612 is an apocalyptic number.

680017612 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

680017612 is a deficient number, since it is larger than the sum of its proper divisors (620665268).

680017612 is a wasteful number, since it uses less digits than its factorization.

680017612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322641 (or 322639 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 680017612 is about 26077.1473133086. The cubic root of 680017612 is about 879.3735262253.

Adding to 680017612 its reverse (216710086), we get a palindrome (896727698).

The spelling of 680017612 in words is "six hundred eighty million, seventeen thousand, six hundred twelve".