20654697 has 8 divisors (see below), whose sum is σ = 31473856. Its totient is φ = 11802672.

The previous prime is 20654687. The next prime is 20654701. The reversal of 20654697 is 79645602.

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

It is not a de Polignac number, because 20654697 - 2⁸ = 20654441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20654617) 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, 491758 + ... + 491799.

It is an arithmetic number, because the mean of its divisors is an integer number (3934232).

Almost surely, 2^20654697 is an apocalyptic number.

It is an amenable number.

20654697 is a deficient number, since it is larger than the sum of its proper divisors (10819159).

20654697 is an equidigital number, since it uses as much as digits as its factorization.

20654697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983567.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 20654697 is about 4544.7438871734. The cubic root of 20654697 is about 274.3718865607.

The spelling of 20654697 in words is "twenty million, six hundred fifty-four thousand, six hundred ninety-seven".