680522069 has 4 divisors (see below), whose sum is σ = 716339040. Its totient is φ = 644705100.

The previous prime is 680522057. The next prime is 680522083. The reversal of 680522069 is 960225086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680522069 - 2¹⁶ = 680456533 is a prime.

It is a super-2 number, since 2×680522069² = 926220572792081522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680522099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17908457 + ... + 17908494.

It is an arithmetic number, because the mean of its divisors is an integer number (179084760).

Almost surely, 2^680522069 is an apocalyptic number.

It is an amenable number.

680522069 is a deficient number, since it is larger than the sum of its proper divisors (35816971).

680522069 is a wasteful number, since it uses less digits than its factorization.

680522069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35816970.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 680522069 is about 26086.8179163347. The cubic root of 680522069 is about 879.5909208315.

The spelling of 680522069 in words is "six hundred eighty million, five hundred twenty-two thousand, sixty-nine".