68170078 has 4 divisors (see below), whose sum is σ = 102255120. Its totient is φ = 34085038.

The previous prime is 68170057. The next prime is 68170079. The reversal of 68170078 is 87007186.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68170079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17042518 + ... + 17042521.

It is an arithmetic number, because the mean of its divisors is an integer number (25563780).

Almost surely, 2^68170078 is an apocalyptic number.

68170078 is a deficient number, since it is larger than the sum of its proper divisors (34085042).

68170078 is a wasteful number, since it uses less digits than its factorization.

68170078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34085041.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 68170078 is about 8256.5173045298. The cubic root of 68170078 is about 408.5055208653.

The spelling of 68170078 in words is "sixty-eight million, one hundred seventy thousand, seventy-eight".