3605688978 has 16 divisors (see below), whose sum is σ = 7524916416. Its totient is φ = 1149639920.

The previous prime is 3605688973. The next prime is 3605689049. The reversal of 3605688978 is 8798865063.

It is not an unprimeable number, because it can be changed into a prime (3605688971) 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 7 ways as a sum of consecutive naturals, for example, 13063953 + ... + 13064228.

It is an arithmetic number, because the mean of its divisors is an integer number (470307276).

Almost surely, 2^3605688978 is an apocalyptic number.

3605688978 is an abundant number, since it is smaller than the sum of its proper divisors (3919227438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3605688978 is a wasteful number, since it uses less digits than its factorization.

3605688978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26128209.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The square root of 3605688978 is about 60047.3894353451. The cubic root of 3605688978 is about 1533.4257579554.

The spelling of 3605688978 in words is "three billion, six hundred five million, six hundred eighty-eight thousand, nine hundred seventy-eight".