68557534 has 8 divisors (see below), whose sum is σ = 104522328. Its totient is φ = 33716760.

The previous prime is 68557507. The next prime is 68557553. The reversal of 68557534 is 43575586.

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

It is a super-2 number, since 2×68557534² = 9400270936322312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280852 + ... + 281095.

It is an arithmetic number, because the mean of its divisors is an integer number (13065291).

Almost surely, 2^68557534 is an apocalyptic number.

68557534 is a deficient number, since it is larger than the sum of its proper divisors (35964794).

68557534 is a wasteful number, since it uses less digits than its factorization.

68557534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562010.

The product of its digits is 504000, while the sum is 43.

The square root of 68557534 is about 8279.9477051489. The cubic root of 68557534 is about 409.2779956162.

The spelling of 68557534 in words is "sixty-eight million, five hundred fifty-seven thousand, five hundred thirty-four".