680528429 has 16 divisors (see below), whose sum is σ = 788164608. Its totient is φ = 575534592.

The previous prime is 680528417. The next prime is 680528437. The reversal of 680528429 is 924825086.

It is a cyclic number.

It is not a de Polignac number, because 680528429 - 2¹² = 680524333 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 680528429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680528929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251924 + ... + 254610.

It is an arithmetic number, because the mean of its divisors is an integer number (49260288).

Almost surely, 2^680528429 is an apocalyptic number.

It is an amenable number.

680528429 is a deficient number, since it is larger than the sum of its proper divisors (107636179).

680528429 is a wasteful number, since it uses less digits than its factorization.

680528429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 680528429 is about 26086.9398166975. The cubic root of 680528429 is about 879.5936609732.

The spelling of 680528429 in words is "six hundred eighty million, five hundred twenty-eight thousand, four hundred twenty-nine".