68509958 has 12 divisors (see below), whose sum is σ = 112956900. Its totient is φ = 31140780.

The previous prime is 68509957. The next prime is 68509963. The reversal of 68509958 is 85990586.

It is a happy number.

It is a super-2 number, since 2×68509958² = 9387228690323528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68509951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141308 + ... + 141791.

It is an arithmetic number, because the mean of its divisors is an integer number (9413075).

Almost surely, 2^68509958 is an apocalyptic number.

68509958 is a deficient number, since it is larger than the sum of its proper divisors (44446942).

68509958 is a wasteful number, since it uses less digits than its factorization.

68509958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283123 (or 283112 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 68509958 is about 8277.0742415421. The cubic root of 68509958 is about 409.1832998927.

The spelling of 68509958 in words is "sixty-eight million, five hundred nine thousand, nine hundred fifty-eight".