20655465 has 8 divisors (see below), whose sum is σ = 33048768. Its totient is φ = 11016240.

The previous prime is 20655457. The next prime is 20655469. The reversal of 20655465 is 56455602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20655465 - 2³ = 20655457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20655469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688501 + ... + 688530.

It is an arithmetic number, because the mean of its divisors is an integer number (4131096).

Almost surely, 2^20655465 is an apocalyptic number.

It is an amenable number.

20655465 is a deficient number, since it is larger than the sum of its proper divisors (12393303).

20655465 is a wasteful number, since it uses less digits than its factorization.

20655465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377039.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 20655465 is about 4544.8283795981. The cubic root of 20655465 is about 274.3752871592.

The spelling of 20655465 in words is "twenty million, six hundred fifty-five thousand, four hundred sixty-five".