5660978 has 4 divisors (see below), whose sum is σ = 8491470. Its totient is φ = 2830488.

The previous prime is 5660971. The next prime is 5660987. The reversal of 5660978 is 8790665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5442889 + 218089 = 2333^2 + 467^2 .

It is not an unprimeable number, because it can be changed into a prime (5660971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415243 + ... + 1415246.

Almost surely, 2^5660978 is an apocalyptic number.

5660978 is a deficient number, since it is larger than the sum of its proper divisors (2830492).

5660978 is a wasteful number, since it uses less digits than its factorization.

5660978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830491.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 5660978 is about 2379.2809838268. The cubic root of 5660978 is about 178.2230297787.

The spelling of 5660978 in words is "five million, six hundred sixty thousand, nine hundred seventy-eight".