68551623 has 16 divisors (see below), whose sum is σ = 116066560. Its totient is φ = 39172248.

The previous prime is 68551607. The next prime is 68551643. The reversal of 68551623 is 32615586.

It is not a de Polignac number, because 68551623 - 2⁴ = 68551607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68551643) 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 in 15 ways as a sum of consecutive naturals, for example, 181165 + ... + 181542.

It is an arithmetic number, because the mean of its divisors is an integer number (7254160).

Almost surely, 2^68551623 is an apocalyptic number.

68551623 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68551623 is a deficient number, since it is larger than the sum of its proper divisors (47514937).

68551623 is a wasteful number, since it uses less digits than its factorization.

68551623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362723 (or 362717 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 68551623 is about 8279.5907507557. The cubic root of 68551623 is about 409.2662326894.

The spelling of 68551623 in words is "sixty-eight million, five hundred fifty-one thousand, six hundred twenty-three".