680153540 has 24 divisors (see below), whose sum is σ = 1558170432. Its totient is φ = 247328480.

The previous prime is 680153521. The next prime is 680153563. The reversal of 680153540 is 45351086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 680153497 and 680153506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545584 + ... + 1546023.

It is an arithmetic number, because the mean of its divisors is an integer number (64923768).

Almost surely, 2^680153540 is an apocalyptic number.

It is an amenable number.

680153540 is an abundant number, since it is smaller than the sum of its proper divisors (878016892).

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

680153540 is a wasteful number, since it uses less digits than its factorization.

680153540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091627 (or 3091625 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 680153540 is about 26079.7534497549. The cubic root of 680153540 is about 879.4321146693.

The spelling of 680153540 in words is "six hundred eighty million, one hundred fifty-three thousand, five hundred forty".