68006450 has 24 divisors (see below), whose sum is σ = 130856580. Its totient is φ = 26264000.

The previous prime is 68006441. The next prime is 68006461. The reversal of 68006450 is 5460086.

It can be written as a sum of positive squares in 6 ways, for example, as 43573201 + 24433249 = 6601^2 + 4943^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 22001 + ... + 24900.

Almost surely, 2^68006450 is an apocalyptic number.

68006450 is a deficient number, since it is larger than the sum of its proper divisors (62850130).

68006450 is a wasteful number, since it uses less digits than its factorization.

68006450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46942 (or 46937 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 68006450 is about 8246.6023306572. The cubic root of 68006450 is about 408.1784150168.

The spelling of 68006450 in words is "sixty-eight million, six thousand, four hundred fifty".