68551406 has 32 divisors (see below), whose sum is σ = 128742912. Its totient is φ = 26595360.

The previous prime is 68551391. The next prime is 68551421. The reversal of 68551406 is 60415586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68551391) and next prime (68551421).

It is a congruent number.

It is an unprimeable number.

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, 41855 + ... + 43461.

It is an arithmetic number, because the mean of its divisors is an integer number (4023216).

Almost surely, 2^68551406 is an apocalyptic number.

68551406 is a deficient number, since it is larger than the sum of its proper divisors (60191506).

68551406 is a wasteful number, since it uses less digits than its factorization.

68551406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 68551406 is about 8279.5776462329. The cubic root of 68551406 is about 409.2658008452.

The spelling of 68551406 in words is "sixty-eight million, five hundred fifty-one thousand, four hundred six".