68244890 has 16 divisors (see below), whose sum is σ = 140389632. Its totient is φ = 23398224.

The previous prime is 68244889. The next prime is 68244899. The reversal of 68244890 is 9844286.

It is a super-2 number, since 2×68244890² = 9314730022224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68244899) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 487394 + ... + 487533.

It is an arithmetic number, because the mean of its divisors is an integer number (8774352).

Almost surely, 2^68244890 is an apocalyptic number.

68244890 is an abundant number, since it is smaller than the sum of its proper divisors (72144742).

68244890 is a wasteful number, since it uses less digits than its factorization.

68244890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974941.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 68244890 is about 8261.0465438708. The cubic root of 68244890 is about 408.6549018604.

The spelling of 68244890 in words is "sixty-eight million, two hundred forty-four thousand, eight hundred ninety".