68148229 has 4 divisors (see below), whose sum is σ = 68969376. Its totient is φ = 67327084.

The previous prime is 68148211. The next prime is 68148251. The reversal of 68148229 is 92284186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92284186 = 2 ⋅46142093.

It is a cyclic number.

It is not a de Polignac number, because 68148229 - 2²¹ = 66051077 is a prime.

It is a super-2 number, since 2×68148229² = 9288362231672882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68148191 and 68148200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68148209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410449 + ... + 410614.

It is an arithmetic number, because the mean of its divisors is an integer number (17242344).

Almost surely, 2^68148229 is an apocalyptic number.

It is an amenable number.

68148229 is a deficient number, since it is larger than the sum of its proper divisors (821147).

68148229 is an equidigital number, since it uses as much as digits as its factorization.

68148229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821146.

The product of its digits is 55296, while the sum is 40.

The square root of 68148229 is about 8255.1940619225. The cubic root of 68148229 is about 408.4618732166.

The spelling of 68148229 in words is "sixty-eight million, one hundred forty-eight thousand, two hundred twenty-nine".