68153474 has 4 divisors (see below), whose sum is σ = 102230214. Its totient is φ = 34076736.

The previous prime is 68153471. The next prime is 68153489. The reversal of 68153474 is 47435186.

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., 37295449 + 30858025 = 6107^2 + 5555^2 .

It is a super-3 number, since 3×68153474³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68153471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17038367 + ... + 17038370.

Almost surely, 2^68153474 is an apocalyptic number.

68153474 is a deficient number, since it is larger than the sum of its proper divisors (34076740).

68153474 is a wasteful number, since it uses less digits than its factorization.

68153474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34076739.

The product of its digits is 80640, while the sum is 38.

The square root of 68153474 is about 8255.5117345928. The cubic root of 68153474 is about 408.4723519803.

The spelling of 68153474 in words is "sixty-eight million, one hundred fifty-three thousand, four hundred seventy-four".