63746221 has 8 divisors (see below), whose sum is σ = 79475904. Its totient is φ = 49672320.

The previous prime is 63746201. The next prime is 63746257. The reversal of 63746221 is 12264736.

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

It is a cyclic number.

It is not a de Polignac number, because 63746221 - 2⁷ = 63746093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63746201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413860 + ... + 414013.

It is an arithmetic number, because the mean of its divisors is an integer number (9934488).

Almost surely, 2^63746221 is an apocalyptic number.

It is an amenable number.

63746221 is a deficient number, since it is larger than the sum of its proper divisors (15729683).

63746221 is a wasteful number, since it uses less digits than its factorization.

63746221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827891.

The product of its digits is 12096, while the sum is 31.

The square root of 63746221 is about 7984.1230576689. The cubic root of 63746221 is about 399.4705933807.

The spelling of 63746221 in words is "sixty-three million, seven hundred forty-six thousand, two hundred twenty-one".