7978827 has 8 divisors (see below), whose sum is σ = 10784464. Its totient is φ = 5246208.

The previous prime is 7978819. The next prime is 7978837. The reversal of 7978827 is 7288797.

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

It is not a de Polignac number, because 7978827 - 2³ = 7978819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7978807) 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, 17998 + ... + 18435.

It is an arithmetic number, because the mean of its divisors is an integer number (1348058).

Almost surely, 2^7978827 is an apocalyptic number.

7978827 is a deficient number, since it is larger than the sum of its proper divisors (2805637).

7978827 is a wasteful number, since it uses less digits than its factorization.

7978827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36509.

The product of its digits is 395136, while the sum is 48.

The square root of 7978827 is about 2824.6817519855. The cubic root of 7978827 is about 199.8234024457.

The spelling of 7978827 in words is "seven million, nine hundred seventy-eight thousand, eight hundred twenty-seven".