6978464 has 12 divisors (see below), whose sum is σ = 13738914. Its totient is φ = 3489216.

The previous prime is 6978463. The next prime is 6978467. The reversal of 6978464 is 4648796.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 2226064 = 2180^2 + 1492^2 .

It is not an unprimeable number, because it can be changed into a prime (6978463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109007 + ... + 109070.

Almost surely, 2^6978464 is an apocalyptic number.

It is an amenable number.

6978464 is a deficient number, since it is larger than the sum of its proper divisors (6760450).

6978464 is a wasteful number, since it uses less digits than its factorization.

6978464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218087 (or 218079 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 6978464 is about 2641.6782544436. The cubic root of 6978464 is about 191.0967411025.

The spelling of 6978464 in words is "six million, nine hundred seventy-eight thousand, four hundred sixty-four".