687228147 has 6 divisors (see below), whose sum is σ = 992662892. Its totient is φ = 458152092.

The previous prime is 687228137. The next prime is 687228161. The reversal of 687228147 is 741822786.

It is not a de Polignac number, because 687228147 - 2¹⁶ = 687162611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687228137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38179333 + ... + 38179350.

Almost surely, 2^687228147 is an apocalyptic number.

687228147 is a deficient number, since it is larger than the sum of its proper divisors (305434745).

687228147 is a wasteful number, since it uses less digits than its factorization.

687228147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76358689 (or 76358686 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 687228147 is about 26215.0366583760. The cubic root of 687228147 is about 882.4707368843.

The spelling of 687228147 in words is "six hundred eighty-seven million, two hundred twenty-eight thousand, one hundred forty-seven".