68599978 has 8 divisors (see below), whose sum is σ = 105089472. Its totient is φ = 33570156.

The previous prime is 68599963. The next prime is 68599991. The reversal of 68599978 is 87999586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364800 + ... + 364987.

It is an arithmetic number, because the mean of its divisors is an integer number (13136184).

Almost surely, 2^68599978 is an apocalyptic number.

68599978 is a deficient number, since it is larger than the sum of its proper divisors (36489494).

68599978 is a wasteful number, since it uses less digits than its factorization.

68599978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729836.

The product of its digits is 9797760, while the sum is 61.

The square root of 68599978 is about 8282.5103682398. The cubic root of 68599978 is about 409.3624395890.

The spelling of 68599978 in words is "sixty-eight million, five hundred ninety-nine thousand, nine hundred seventy-eight".