78568601 has 4 divisors (see below), whose sum is σ = 81103104. Its totient is φ = 76034100.

The previous prime is 78568597. The next prime is 78568603. The reversal of 78568601 is 10686587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78568601 - 2² = 78568597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78568603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267205 + ... + 1267266.

It is an arithmetic number, because the mean of its divisors is an integer number (20275776).

Almost surely, 2^78568601 is an apocalyptic number.

It is an amenable number.

78568601 is a deficient number, since it is larger than the sum of its proper divisors (2534503).

78568601 is a wasteful number, since it uses less digits than its factorization.

78568601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534502.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78568601 is about 8863.8931063049. The cubic root of 78568601 is about 428.3015769109.

The spelling of 78568601 in words is "seventy-eight million, five hundred sixty-eight thousand, six hundred one".