687228369 has 16 divisors (see below), whose sum is σ = 940972032. Its totient is φ = 445955328.

The previous prime is 687228329. The next prime is 687228389. The reversal of 687228369 is 963822786.

687228369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 687228369 - 2²³ = 678839761 is a prime.

It is a super-2 number, since 2×687228369² = 944565662316800322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (687228319) 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, 3177 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (58810752).

Almost surely, 2^687228369 is an apocalyptic number.

It is an amenable number.

687228369 is a deficient number, since it is larger than the sum of its proper divisors (253743663).

687228369 is a wasteful number, since it uses less digits than its factorization.

687228369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34216.

The product of its digits is 1741824, while the sum is 51.

The square root of 687228369 is about 26215.0408925868. The cubic root of 687228369 is about 882.4708319078.

The spelling of 687228369 in words is "six hundred eighty-seven million, two hundred twenty-eight thousand, three hundred sixty-nine".