68045864 has 16 divisors (see below), whose sum is σ = 128293620. Its totient is φ = 33834240.

The previous prime is 68045863. The next prime is 68045893. The reversal of 68045864 is 46854086.

It can be written as a sum of positive squares in 2 ways, for example, as 44328964 + 23716900 = 6658^2 + 4870^2 .

It is not an unprimeable number, because it can be changed into a prime (68045863) 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, 22049 + ... + 24944.

Almost surely, 2^68045864 is an apocalyptic number.

It is an amenable number.

68045864 is a deficient number, since it is larger than the sum of its proper divisors (60247756).

68045864 is a wasteful number, since it uses less digits than its factorization.

68045864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47180 (or 47176 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 68045864 is about 8248.9916959590. The cubic root of 68045864 is about 408.2572547791.

The spelling of 68045864 in words is "sixty-eight million, forty-five thousand, eight hundred sixty-four".