20701608 has 16 divisors (see below), whose sum is σ = 51754080. Its totient is φ = 6900528.

The previous prime is 20701579. The next prime is 20701609. The reversal of 20701608 is 80610702.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 862567 = 20701608 / (2 + 0 + 7 + 0 + 1 + 6 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (20701609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431260 + ... + 431307.

It is an arithmetic number, because the mean of its divisors is an integer number (3234630).

Almost surely, 2^20701608 is an apocalyptic number.

It is an amenable number.

20701608 is an abundant number, since it is smaller than the sum of its proper divisors (31052472).

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

20701608 is a wasteful number, since it uses less digits than its factorization.

20701608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862576 (or 862572 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 20701608 is about 4549.9019769661. The cubic root of 20701608 is about 274.5794475428.

The spelling of 20701608 in words is "twenty million, seven hundred one thousand, six hundred eight".