687087446 has 32 divisors (see below), whose sum is σ = 1065996288. Its totient is φ = 332034400.

The previous prime is 687087439. The next prime is 687087449. The reversal of 687087446 is 644780786.

It is a junction number, because it is equal to n+sod(n) for n = 687087394 and 687087403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687087449) 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, 1793771 + ... + 1794153.

It is an arithmetic number, because the mean of its divisors is an integer number (33312384).

Almost surely, 2^687087446 is an apocalyptic number.

687087446 is a deficient number, since it is larger than the sum of its proper divisors (378908842).

687087446 is a wasteful number, since it uses less digits than its factorization.

687087446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The square root of 687087446 is about 26212.3529275798. The cubic root of 687087446 is about 882.4105079825.

The spelling of 687087446 in words is "six hundred eighty-seven million, eighty-seven thousand, four hundred forty-six".