20704616 has 8 divisors (see below), whose sum is σ = 38821170. Its totient is φ = 10352304.

The previous prime is 20704603. The next prime is 20704627. The reversal of 20704616 is 61640702.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 2116 = 4550^2 + 46^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20704616² = 857362247414912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1294031 + ... + 1294046.

Almost surely, 2^20704616 is an apocalyptic number.

It is an amenable number.

20704616 is a deficient number, since it is larger than the sum of its proper divisors (18116554).

20704616 is a wasteful number, since it uses less digits than its factorization.

20704616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588083 (or 2588079 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20704616 is about 4550.2325215312. The cubic root of 20704616 is about 274.5927459458.

The spelling of 20704616 in words is "twenty million, seven hundred four thousand, six hundred sixteen".