68148061 has 4 divisors (see below), whose sum is σ = 68192800. Its totient is φ = 68103324.

The previous prime is 68147977. The next prime is 68148071. The reversal of 68148061 is 16084186.

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: 16084186 = 2 ⋅8042093.

It is a cyclic number.

It is not a de Polignac number, because 68148061 - 2¹⁵ = 68115293 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 (68148071) 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, 20001 + ... + 23158.

It is an arithmetic number, because the mean of its divisors is an integer number (17048200).

Almost surely, 2^68148061 is an apocalyptic number.

It is an amenable number.

68148061 is a deficient number, since it is larger than the sum of its proper divisors (44739).

68148061 is a wasteful number, since it uses less digits than its factorization.

68148061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44738.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 68148061 is about 8255.1838865043. The cubic root of 68148061 is about 408.4615375676.

The spelling of 68148061 in words is "sixty-eight million, one hundred forty-eight thousand, sixty-one".