68507590 has 16 divisors (see below), whose sum is σ = 124446960. Its totient is φ = 27151200.

The previous prime is 68507587. The next prime is 68507591. The reversal of 68507590 is 9570586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68507591) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30336 + ... + 32515.

It is an arithmetic number, because the mean of its divisors is an integer number (7777935).

Almost surely, 2^68507590 is an apocalyptic number.

68507590 is a deficient number, since it is larger than the sum of its proper divisors (55939370).

68507590 is a wasteful number, since it uses less digits than its factorization.

68507590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62967.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 68507590 is about 8276.9311945914. The cubic root of 68507590 is about 409.1785854578.

The spelling of 68507590 in words is "sixty-eight million, five hundred seven thousand, five hundred ninety".