68171949 has 36 divisors (see below), whose sum is σ = 105158144. Its totient is φ = 44130744.

The previous prime is 68171927. The next prime is 68171969. The reversal of 68171949 is 94917186.

It is a happy number.

It is not a de Polignac number, because 68171949 - 2⁸ = 68171693 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 (68171969) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 536724 + ... + 536850.

Almost surely, 2^68171949 is an apocalyptic number.

It is an amenable number.

68171949 is a deficient number, since it is larger than the sum of its proper divisors (36986195).

68171949 is an equidigital number, since it uses as much as digits as its factorization.

68171949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 177 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 68171949 is about 8256.6306081839. The cubic root of 68171949 is about 408.5092581200.

The spelling of 68171949 in words is "sixty-eight million, one hundred seventy-one thousand, nine hundred forty-nine".