78901147 has 8 divisors (see below), whose sum is σ = 85276800. Its totient is φ = 72569280.

The previous prime is 78901139. The next prime is 78901157. The reversal of 78901147 is 74110987.

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 78901147 - 2³ = 78901139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78901117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7147 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (10659600).

Almost surely, 2^78901147 is an apocalyptic number.

78901147 is a deficient number, since it is larger than the sum of its proper divisors (6375653).

78901147 is a wasteful number, since it uses less digits than its factorization.

78901147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21893.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 78901147 is about 8882.6317609141. The cubic root of 78901147 is about 428.9049965041.

The spelling of 78901147 in words is "seventy-eight million, nine hundred one thousand, one hundred forty-seven".