68220151 has 8 divisors (see below), whose sum is σ = 70670880. Its totient is φ = 65776032.

The previous prime is 68220149. The next prime is 68220221. The reversal of 68220151 is 15102286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68220151 - 2¹ = 68220149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68220101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29721 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (8833860).

Almost surely, 2^68220151 is an apocalyptic number.

68220151 is a deficient number, since it is larger than the sum of its proper divisors (2450729).

68220151 is a wasteful number, since it uses less digits than its factorization.

68220151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 68220151 is about 8259.5490797016. The cubic root of 68220151 is about 408.6055163046.

The spelling of 68220151 in words is "sixty-eight million, two hundred twenty thousand, one hundred fifty-one".