68273554 has 4 divisors (see below), whose sum is σ = 102410334. Its totient is φ = 34136776.

The previous prime is 68273537. The next prime is 68273587. The reversal of 68273554 is 45537286.

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., 67815225 + 458329 = 8235^2 + 677^2 .

It is a super-2 number, since 2×68273554² = 9322556351581832, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17068387 + ... + 17068390.

Almost surely, 2^68273554 is an apocalyptic number.

68273554 is a deficient number, since it is larger than the sum of its proper divisors (34136780).

68273554 is a wasteful number, since it uses less digits than its factorization.

68273554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34136779.

The product of its digits is 201600, while the sum is 40.

The square root of 68273554 is about 8262.7812508864. The cubic root of 68273554 is about 408.7121078261.

The spelling of 68273554 in words is "sixty-eight million, two hundred seventy-three thousand, five hundred fifty-four".