20607261 has 8 divisors (see below), whose sum is σ = 28219104. Its totient is φ = 13366800.

The previous prime is 20607227. The next prime is 20607263. The reversal of 20607261 is 16270602.

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 20607261 - 2⁹ = 20606749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20607263) 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 7 ways as a sum of consecutive naturals, for example, 92715 + ... + 92936.

It is an arithmetic number, because the mean of its divisors is an integer number (3527388).

Almost surely, 2^20607261 is an apocalyptic number.

It is an amenable number.

20607261 is a deficient number, since it is larger than the sum of its proper divisors (7611843).

20607261 is a wasteful number, since it uses less digits than its factorization.

20607261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185691.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20607261 is about 4539.5221114122. The cubic root of 20607261 is about 274.1616828617.

Adding to 20607261 its reverse (16270602), we get a palindrome (36877863).

The spelling of 20607261 in words is "twenty million, six hundred seven thousand, two hundred sixty-one".