680100637 has 4 divisors (see below), whose sum is σ = 680190940. Its totient is φ = 680010336.

The previous prime is 680100613. The next prime is 680100677. The reversal of 680100637 is 736001086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 437395396 + 242705241 = 20914^2 + 15579^2 .

It is a cyclic number.

It is not a de Polignac number, because 680100637 - 2¹⁹ = 679576349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680100599 and 680100608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680100677) 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, 32712 + ... + 49297.

It is an arithmetic number, because the mean of its divisors is an integer number (170047735).

Almost surely, 2^680100637 is an apocalyptic number.

It is an amenable number.

680100637 is a deficient number, since it is larger than the sum of its proper divisors (90303).

680100637 is an equidigital number, since it uses as much as digits as its factorization.

680100637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90302.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 680100637 is about 26078.7391758114. The cubic root of 680100637 is about 879.4093130513.

The spelling of 680100637 in words is "six hundred eighty million, one hundred thousand, six hundred thirty-seven".