68441478 has 16 divisors (see below), whose sum is σ = 156437760. Its totient is φ = 19554696.

The previous prime is 68441449. The next prime is 68441489. The reversal of 68441478 is 87414486.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1629559 = 68441478 / (6 + 8 + 4 + 4 + 1 + 4 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814738 + ... + 814821.

It is an arithmetic number, because the mean of its divisors is an integer number (9777360).

Almost surely, 2^68441478 is an apocalyptic number.

68441478 is an abundant number, since it is smaller than the sum of its proper divisors (87996282).

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

68441478 is a wasteful number, since it uses less digits than its factorization.

68441478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629571.

The product of its digits is 172032, while the sum is 42.

The square root of 68441478 is about 8272.9364798722. The cubic root of 68441478 is about 409.0469196516.

The spelling of 68441478 in words is "sixty-eight million, four hundred forty-one thousand, four hundred seventy-eight".