680587451 has 4 divisors (see below), whose sum is σ = 681179904. Its totient is φ = 679995000.

The previous prime is 680587447. The next prime is 680587459. The reversal of 680587451 is 154785086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 680587451 - 2² = 680587447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680587459) 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, 294500 + ... + 296801.

It is an arithmetic number, because the mean of its divisors is an integer number (170294976).

Almost surely, 2^680587451 is an apocalyptic number.

680587451 is a deficient number, since it is larger than the sum of its proper divisors (592453).

680587451 is a wasteful number, since it uses less digits than its factorization.

680587451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592452.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 680587451 is about 26088.0710478947. The cubic root of 680587451 is about 879.6190891915.

The spelling of 680587451 in words is "six hundred eighty million, five hundred eighty-seven thousand, four hundred fifty-one".