687274162 has 4 divisors (see below), whose sum is σ = 1030911246. Its totient is φ = 343637080.

The previous prime is 687274153. The next prime is 687274163. The reversal of 687274162 is 261472786.

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

It can be written as a sum of positive squares in only one way, i.e., 618566641 + 68707521 = 24871^2 + 8289^2 .

It is not an unprimeable number, because it can be changed into a prime (687274163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171818539 + ... + 171818542.

Almost surely, 2^687274162 is an apocalyptic number.

687274162 is a deficient number, since it is larger than the sum of its proper divisors (343637084).

687274162 is a wasteful number, since it uses less digits than its factorization.

687274162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343637083.

The product of its digits is 225792, while the sum is 43.

The square root of 687274162 is about 26215.9142888437. The cubic root of 687274162 is about 882.4904324225.

The spelling of 687274162 in words is "six hundred eighty-seven million, two hundred seventy-four thousand, one hundred sixty-two".