68366149 has 4 divisors (see below), whose sum is σ = 68888160. Its totient is φ = 67844140.

The previous prime is 68366119. The next prime is 68366171. The reversal of 68366149 is 94166386.

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: 94166386 = 2 ⋅47083193.

It is a cyclic number.

It is not a de Polignac number, because 68366149 - 2¹⁹ = 67841861 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 (68366119) 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, 260809 + ... + 261070.

It is an arithmetic number, because the mean of its divisors is an integer number (17222040).

Almost surely, 2^68366149 is an apocalyptic number.

It is an amenable number.

68366149 is a deficient number, since it is larger than the sum of its proper divisors (522011).

68366149 is a wasteful number, since it uses less digits than its factorization.

68366149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522010.

The product of its digits is 186624, while the sum is 43.

The square root of 68366149 is about 8268.3824899432. The cubic root of 68366149 is about 408.8967942799.

The spelling of 68366149 in words is "sixty-eight million, three hundred sixty-six thousand, one hundred forty-nine".