20260655 has 8 divisors (see below), whose sum is σ = 24337584. Its totient is φ = 16192000.

The previous prime is 20260649. The next prime is 20260663. The reversal of 20260655 is 55606202.

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 20260655 - 2⁸ = 20260399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6740 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (3042198).

Almost surely, 2^20260655 is an apocalyptic number.

20260655 is a deficient number, since it is larger than the sum of its proper divisors (4076929).

20260655 is a wasteful number, since it uses less digits than its factorization.

20260655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20260655 is about 4501.1837331973. The cubic root of 20260655 is about 272.6158865176.

Adding to 20260655 its reverse (55606202), we get a palindrome (75866857).

The spelling of 20260655 in words is "twenty million, two hundred sixty thousand, six hundred fifty-five".