687286272 has 48 divisors (see below), whose sum is σ = 1832332320. Its totient is φ = 229093376.

The previous prime is 687286267. The next prime is 687286273. The reversal of 687286272 is 272682786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (687286273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49788 + ... + 62075.

It is an arithmetic number, because the mean of its divisors is an integer number (38173590).

Almost surely, 2^687286272 is an apocalyptic number.

It is an amenable number.

687286272 is an abundant number, since it is smaller than the sum of its proper divisors (1145046048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687286272 is a wasteful number, since it uses less digits than its factorization.

687286272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111888 (or 111868 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 687286272 is about 26216.1452544038. The cubic root of 687286272 is about 882.4956156507.

The spelling of 687286272 in words is "six hundred eighty-seven million, two hundred eighty-six thousand, two hundred seventy-two".