687474154 has 8 divisors (see below), whose sum is σ = 1035045540. Its totient is φ = 342458976.

The previous prime is 687474149. The next prime is 687474167. The reversal of 687474154 is 451474786.

687474154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 572405625 + 115068529 = 23925^2 + 10727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638379 + ... + 639454.

Almost surely, 2^687474154 is an apocalyptic number.

687474154 is a deficient number, since it is larger than the sum of its proper divisors (347571386).

687474154 is a wasteful number, since it uses less digits than its factorization.

687474154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278104.

The product of its digits is 752640, while the sum is 46.

The square root of 687474154 is about 26219.7283357399. The cubic root of 687474154 is about 882.5760236465.

The spelling of 687474154 in words is "six hundred eighty-seven million, four hundred seventy-four thousand, one hundred fifty-four".