68019915 has 16 divisors (see below), whose sum is σ = 108979200. Its totient is φ = 36228192.

The previous prime is 68019883. The next prime is 68019961. The reversal of 68019915 is 51991086.

It is not a de Polignac number, because 68019915 - 2⁵ = 68019883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10246 + ... + 15524.

It is an arithmetic number, because the mean of its divisors is an integer number (6811200).

Almost surely, 2^68019915 is an apocalyptic number.

68019915 is a deficient number, since it is larger than the sum of its proper divisors (40959285).

68019915 is a wasteful number, since it uses less digits than its factorization.

68019915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 68019915 is about 8247.4186870802. The cubic root of 68019915 is about 408.2053524600.

The spelling of 68019915 in words is "sixty-eight million, nineteen thousand, nine hundred fifteen".