653654221 has 12 divisors (see below), whose sum is σ = 719119296. Its totient is φ = 593702120.

The previous prime is 653654213. The next prime is 653654231. The reversal of 653654221 is 122456356.

It is not a de Polignac number, because 653654221 - 2³ = 653654213 is a prime.

It is a super-2 number, since 2×653654221² = 854527681262233682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653654231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214716 + ... + 217738.

It is an arithmetic number, because the mean of its divisors is an integer number (59926608).

Almost surely, 2^653654221 is an apocalyptic number.

It is an amenable number.

653654221 is a deficient number, since it is larger than the sum of its proper divisors (65465075).

653654221 is a wasteful number, since it uses less digits than its factorization.

653654221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832 (or 4821 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 653654221 is about 25566.6622968271. The cubic root of 653654221 is about 867.8593698032.

The spelling of 653654221 in words is "six hundred fifty-three million, six hundred fifty-four thousand, two hundred twenty-one".