7878061 has 8 divisors (see below), whose sum is σ = 8255744. Its totient is φ = 7508160.

The previous prime is 7878047. The next prime is 7878071. The reversal of 7878061 is 1608787.

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 7878061 - 2¹⁵ = 7845293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7878061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (1031968).

Almost surely, 2^7878061 is an apocalyptic number.

7878061 is the 1621-st hex number.

It is an amenable number.

7878061 is a deficient number, since it is larger than the sum of its proper divisors (377683).

7878061 is a wasteful number, since it uses less digits than its factorization.

7878061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891.

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

The square root of 7878061 is about 2806.7883782003. The cubic root of 7878061 is about 198.9786346093.

The spelling of 7878061 in words is "seven million, eight hundred seventy-eight thousand, sixty-one".