78601087 has 8 divisors (see below), whose sum is σ = 79528832. Its totient is φ = 77679000.

The previous prime is 78601079. The next prime is 78601093. The reversal of 78601087 is 78010687.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78601087 - 2³ = 78601079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78601007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30628 + ... + 33094.

It is an arithmetic number, because the mean of its divisors is an integer number (9941104).

Almost surely, 2^78601087 is an apocalyptic number.

78601087 is a deficient number, since it is larger than the sum of its proper divisors (927745).

78601087 is a wasteful number, since it uses less digits than its factorization.

78601087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 78601087 is about 8865.7254074328. The cubic root of 78601087 is about 428.3605991650.

The spelling of 78601087 in words is "seventy-eight million, six hundred one thousand, eighty-seven".