20606465 has 16 divisors (see below), whose sum is σ = 28563840. Its totient is φ = 14104320.

The previous prime is 20606461. The next prime is 20606473. The reversal of 20606465 is 56460602.

It is not a de Polignac number, because 20606465 - 2² = 20606461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20606461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10085 + ... + 11954.

It is an arithmetic number, because the mean of its divisors is an integer number (1785240).

Almost surely, 2^20606465 is an apocalyptic number.

It is an amenable number.

20606465 is a deficient number, since it is larger than the sum of its proper divisors (7957375).

20606465 is a wasteful number, since it uses less digits than its factorization.

20606465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22072.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20606465 is about 4539.4344361385. The cubic root of 20606465 is about 274.1581527871.

The spelling of 20606465 in words is "twenty million, six hundred six thousand, four hundred sixty-five".