668153474 has 16 divisors (see below), whose sum is σ = 1034565048. Its totient is φ = 323390592.

The previous prime is 668153471. The next prime is 668153489. The reversal of 668153474 is 474351866.

668153474 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 4 ways, for example, as 634687249 + 33466225 = 25193^2 + 5785^2 .

It is not an unprimeable number, because it can be changed into a prime (668153471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8339 + ... + 37494.

Almost surely, 2^668153474 is an apocalyptic number.

668153474 is a deficient number, since it is larger than the sum of its proper divisors (366411574).

668153474 is a wasteful number, since it uses less digits than its factorization.

668153474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46069.

The product of its digits is 483840, while the sum is 44.

The square root of 668153474 is about 25848.6648397940. The cubic root of 668153474 is about 874.2294054708.

The spelling of 668153474 in words is "six hundred sixty-eight million, one hundred fifty-three thousand, four hundred seventy-four".