680290065 has 96 divisors (see below), whose sum is σ = 1461358080. Its totient is φ = 286775424.

The previous prime is 680290063. The next prime is 680290073. The reversal of 680290065 is 560092086.

It is not a de Polignac number, because 680290065 - 2¹ = 680290063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680290063) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 691564 + ... + 692546.

It is an arithmetic number, because the mean of its divisors is an integer number (15222480).

Almost surely, 2^680290065 is an apocalyptic number.

680290065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

680290065 is an abundant number, since it is smaller than the sum of its proper divisors (781068015).

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

680290065 is a wasteful number, since it uses less digits than its factorization.

680290065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 680290065 is about 26082.3707703115. The cubic root of 680290065 is about 879.4909525786.

The spelling of 680290065 in words is "six hundred eighty million, two hundred ninety thousand, sixty-five".