68222147 has 8 divisors (see below), whose sum is σ = 79132416. Its totient is φ = 57602952.

The previous prime is 68222101. The next prime is 68222177. The reversal of 68222147 is 74122286.

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 68222147 - 2²⁰ = 67173571 is a prime.

It is a super-2 number, since 2×68222147² = 9308522682579218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68222177) 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, 72263 + ... + 73200.

It is an arithmetic number, because the mean of its divisors is an integer number (9891552).

Almost surely, 2^68222147 is an apocalyptic number.

68222147 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

68222147 is a deficient number, since it is larger than the sum of its proper divisors (10910269).

68222147 is a wasteful number, since it uses less digits than its factorization.

68222147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145537.

The product of its digits is 10752, while the sum is 32.

The square root of 68222147 is about 8259.6699086586. The cubic root of 68222147 is about 408.6095012887.

The spelling of 68222147 in words is "sixty-eight million, two hundred twenty-two thousand, one hundred forty-seven".