68017995 has 32 divisors (see below), whose sum is σ = 121435200. Its totient is φ = 36122112.

The previous prime is 68017991. The next prime is 68017997. The reversal of 68017995 is 59971086.

It is not a de Polignac number, because 68017995 - 2² = 68017991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68017995.

It is not an unprimeable number, because it can be changed into a prime (68017991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35379 + ... + 37251.

It is an arithmetic number, because the mean of its divisors is an integer number (3794850).

Almost surely, 2^68017995 is an apocalyptic number.

68017995 is a deficient number, since it is larger than the sum of its proper divisors (53417205).

68017995 is a wasteful number, since it uses less digits than its factorization.

68017995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 68017995 is about 8247.3022862024. The cubic root of 68017995 is about 408.2015116160.

The spelling of 68017995 in words is "sixty-eight million, seventeen thousand, nine hundred ninety-five".