68899078 has 4 divisors (see below), whose sum is σ = 103348620. Its totient is φ = 34449538.

The previous prime is 68899067. The next prime is 68899087. The reversal of 68899078 is 87099886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87099886 = 2 ⋅43549943.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17224768 + ... + 17224771.

It is an arithmetic number, because the mean of its divisors is an integer number (25837155).

Almost surely, 2^68899078 is an apocalyptic number.

68899078 is a deficient number, since it is larger than the sum of its proper divisors (34449542).

68899078 is a wasteful number, since it uses less digits than its factorization.

68899078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34449541.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 68899078 is about 8300.5468494552. The cubic root of 68899078 is about 409.9565252336.

The spelling of 68899078 in words is "sixty-eight million, eight hundred ninety-nine thousand, seventy-eight".