680497369 has 32 divisors (see below), whose sum is σ = 781332480. Its totient is φ = 588736512.

The previous prime is 680497361. The next prime is 680497373. The reversal of 680497369 is 963794086.

It is a cyclic number.

It is not a de Polignac number, because 680497369 - 2³ = 680497361 is a prime.

It is a super-2 number, since 2×680497369² = 926153338431844322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680497361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2173957 + ... + 2174269.

It is an arithmetic number, because the mean of its divisors is an integer number (24416640).

Almost surely, 2^680497369 is an apocalyptic number.

It is an amenable number.

680497369 is a deficient number, since it is larger than the sum of its proper divisors (100835111).

680497369 is a wasteful number, since it uses less digits than its factorization.

680497369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 680497369 is about 26086.3444928568. The cubic root of 680497369 is about 879.5802789240.

The spelling of 680497369 in words is "six hundred eighty million, four hundred ninety-seven thousand, three hundred sixty-nine".