7978607 has 16 divisors (see below), whose sum is σ = 10053120. Its totient is φ = 6162912.

The previous prime is 7978603. The next prime is 7978609. The reversal of 7978607 is 7068797.

It is not a de Polignac number, because 7978607 - 2² = 7978603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2894 + ... + 4932.

It is an arithmetic number, because the mean of its divisors is an integer number (628320).

Almost surely, 2^7978607 is an apocalyptic number.

7978607 is a deficient number, since it is larger than the sum of its proper divisors (2074513).

7978607 is a wasteful number, since it uses less digits than its factorization.

7978607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 7978607 is about 2824.6428092770. The cubic root of 7978607 is about 199.8215658536.

The spelling of 7978607 in words is "seven million, nine hundred seventy-eight thousand, six hundred seven".