68422170 has 64 divisors (see below), whose sum is σ = 168364800. Its totient is φ = 17791488.

The previous prime is 68422111. The next prime is 68422187. The reversal of 68422170 is 7122486.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343731 + ... + 343929.

It is an arithmetic number, because the mean of its divisors is an integer number (2630700).

Almost surely, 2^68422170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68422170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84182400).

68422170 is an abundant number, since it is smaller than the sum of its proper divisors (99942630).

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

68422170 is a wasteful number, since it uses less digits than its factorization.

68422170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 68422170 is about 8271.7694600370. The cubic root of 68422170 is about 409.0084506756.

The spelling of 68422170 in words is "sixty-eight million, four hundred twenty-two thousand, one hundred seventy".