68029949 has 4 divisors (see below), whose sum is σ = 73263036. Its totient is φ = 62796864.

The previous prime is 68029933. The next prime is 68029961. The reversal of 68029949 is 94992086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45657049 + 22372900 = 6757^2 + 4730^2 .

It is not a de Polignac number, because 68029949 - 2⁴ = 68029933 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 (68029919) 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, 2616524 + ... + 2616549.

It is an arithmetic number, because the mean of its divisors is an integer number (18315759).

Almost surely, 2^68029949 is an apocalyptic number.

It is an amenable number.

68029949 is a deficient number, since it is larger than the sum of its proper divisors (5233087).

68029949 is a wasteful number, since it uses less digits than its factorization.

68029949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233086.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 68029949 is about 8248.0269761925. The cubic root of 68029949 is about 408.2254236951.

The spelling of 68029949 in words is "sixty-eight million, twenty-nine thousand, nine hundred forty-nine".