20606475 has 24 divisors (see below), whose sum is σ = 35172352. Its totient is φ = 10634400.

The previous prime is 20606473. The next prime is 20606479. The reversal of 20606475 is 57460602.

It is not a de Polignac number, because 20606475 - 2¹ = 20606473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20606473) 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 23 ways as a sum of consecutive naturals, for example, 2107 + ... + 6756.

Almost surely, 2^20606475 is an apocalyptic number.

20606475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20606475 is a deficient number, since it is larger than the sum of its proper divisors (14565877).

20606475 is a wasteful number, since it uses less digits than its factorization.

20606475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907 (or 8902 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 20606475 is about 4539.4355375972. The cubic root of 20606475 is about 274.1581971353.

The spelling of 20606475 in words is "twenty million, six hundred six thousand, four hundred seventy-five".