20607660 has 36 divisors (see below), whose sum is σ = 62510448. Its totient is φ = 5495328.

The previous prime is 20607641. The next prime is 20607673. The reversal of 20607660 is 6670602.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 57064 + ... + 57423.

Almost surely, 2^20607660 is an apocalyptic number.

20607660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20607660 is an abundant number, since it is smaller than the sum of its proper divisors (41902788).

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

20607660 is a wasteful number, since it uses less digits than its factorization.

20607660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114502 (or 114497 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20607660 is about 4539.5660585567. The cubic root of 20607660 is about 274.1634522996.

The spelling of 20607660 in words is "twenty million, six hundred seven thousand, six hundred sixty".