20654486 has 4 divisors (see below), whose sum is σ = 30981732. Its totient is φ = 10327242.

The previous prime is 20654477. The next prime is 20654489. The reversal of 20654486 is 68445602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68445602 = 2 ⋅34222801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20654489) 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 as a sum of consecutive naturals, namely, 5163620 + ... + 5163623.

It is an arithmetic number, because the mean of its divisors is an integer number (7745433).

Almost surely, 2^20654486 is an apocalyptic number.

20654486 is a deficient number, since it is larger than the sum of its proper divisors (10327246).

20654486 is a wasteful number, since it uses less digits than its factorization.

20654486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10327245.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 20654486 is about 4544.7206734848. The cubic root of 20654486 is about 274.3709522669.

The spelling of 20654486 in words is "twenty million, six hundred fifty-four thousand, four hundred eighty-six".