75679978 has 8 divisors (see below), whose sum is σ = 123840000. Its totient is φ = 34399980.

The previous prime is 75679951. The next prime is 75679979. The reversal of 75679978 is 87997657.

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

It is not an unprimeable number, because it can be changed into a prime (75679979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719978 + ... + 1720021.

It is an arithmetic number, because the mean of its divisors is an integer number (15480000).

Almost surely, 2^75679978 is an apocalyptic number.

75679978 is a deficient number, since it is larger than the sum of its proper divisors (48160022).

75679978 is a wasteful number, since it uses less digits than its factorization.

75679978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440012.

The product of its digits is 6667920, while the sum is 58.

The square root of 75679978 is about 8699.4240039212. The cubic root of 75679978 is about 422.9869795373.

The spelling of 75679978 in words is "seventy-five million, six hundred seventy-nine thousand, nine hundred seventy-eight".