7978461 has 24 divisors (see below), whose sum is σ = 11521440. Its totient is φ = 4908384.

The previous prime is 7978459. The next prime is 7978463. The reversal of 7978461 is 1648797.

It is an interprime number because it is at equal distance from previous prime (7978459) and next prime (7978463).

It is not a de Polignac number, because 7978461 - 2¹ = 7978459 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978463) 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 23 ways as a sum of consecutive naturals, for example, 57330 + ... + 57468.

It is an arithmetic number, because the mean of its divisors is an integer number (480060).

Almost surely, 2^7978461 is an apocalyptic number.

It is an amenable number.

7978461 is a deficient number, since it is larger than the sum of its proper divisors (3542979).

7978461 is a wasteful number, since it uses less digits than its factorization.

7978461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 214 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 7978461 is about 2824.6169651831. The cubic root of 7978461 is about 199.8203470057.

The spelling of 7978461 in words is "seven million, nine hundred seventy-eight thousand, four hundred sixty-one".