68228494 has 4 divisors (see below), whose sum is σ = 102342744. Its totient is φ = 34114246.

The previous prime is 68228491. The next prime is 68228507. The reversal of 68228494 is 49482286.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×68228494³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68228494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68228491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17057122 + ... + 17057125.

It is an arithmetic number, because the mean of its divisors is an integer number (25585686).

Almost surely, 2^68228494 is an apocalyptic number.

68228494 is a deficient number, since it is larger than the sum of its proper divisors (34114250).

68228494 is a wasteful number, since it uses less digits than its factorization.

68228494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34114249.

The product of its digits is 221184, while the sum is 43.

The square root of 68228494 is about 8260.0541160455. The cubic root of 68228494 is about 408.6221724627.

The spelling of 68228494 in words is "sixty-eight million, two hundred twenty-eight thousand, four hundred ninety-four".