68280558 has 32 divisors (see below), whose sum is σ = 143285760. Its totient is φ = 21661920.

The previous prime is 68280557. The next prime is 68280559. The reversal of 68280558 is 85508286.

It is an interprime number because it is at equal distance from previous prime (68280557) and next prime (68280559).

It is a super-3 number, since 3×68280558³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68280557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9591 + ... + 15117.

It is an arithmetic number, because the mean of its divisors is an integer number (4477680).

Almost surely, 2^68280558 is an apocalyptic number.

68280558 is an abundant number, since it is smaller than the sum of its proper divisors (75005202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68280558 is a wasteful number, since it uses less digits than its factorization.

68280558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 68280558 is about 8263.2050682529. The cubic root of 68280558 is about 408.7260835729.

The spelling of 68280558 in words is "sixty-eight million, two hundred eighty thousand, five hundred fifty-eight".