680019545 has 16 divisors (see below), whose sum is σ = 833656320. Its totient is φ = 532345344.

The previous prime is 680019539. The next prime is 680019551. The reversal of 680019545 is 545910086.

It is an interprime number because it is at equal distance from previous prime (680019539) and next prime (680019551).

It is a cyclic number.

It is not a de Polignac number, because 680019545 - 2¹⁸ = 679757401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680019499 and 680019508.

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 15 ways as a sum of consecutive naturals, for example, 60617 + ... + 70953.

It is an arithmetic number, because the mean of its divisors is an integer number (52103520).

Almost surely, 2^680019545 is an apocalyptic number.

It is an amenable number.

680019545 is a deficient number, since it is larger than the sum of its proper divisors (153636775).

680019545 is a wasteful number, since it uses less digits than its factorization.

680019545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10624.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 680019545 is about 26077.1843763854. The cubic root of 680019545 is about 879.3743594525.

The spelling of 680019545 in words is "six hundred eighty million, nineteen thousand, five hundred forty-five".