680513461 has 2 divisors, whose sum is σ = 680513462. Its totient is φ = 680513460.

The previous prime is 680513447. The next prime is 680513501. The reversal of 680513461 is 164315086.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407636100 + 272877361 = 20190^2 + 16519^2 .

It is a cyclic number.

It is not a de Polignac number, because 680513461 - 2¹¹ = 680511413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680513761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340256730 + 340256731.

It is an arithmetic number, because the mean of its divisors is an integer number (340256731).

Almost surely, 2^680513461 is an apocalyptic number.

It is an amenable number.

680513461 is a deficient number, since it is larger than the sum of its proper divisors (1).

680513461 is an equidigital number, since it uses as much as digits as its factorization.

680513461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 680513461 is about 26086.6529282697. The cubic root of 680513461 is about 879.5872121344.

The spelling of 680513461 in words is "six hundred eighty million, five hundred thirteen thousand, four hundred sixty-one".