63648157 has 4 divisors (see below), whose sum is σ = 66998080. Its totient is φ = 60298236.

The previous prime is 63648149. The next prime is 63648173. The reversal of 63648157 is 75184636.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63648157 - 2³ = 63648149 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 (63648457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674933 + ... + 1674970.

It is an arithmetic number, because the mean of its divisors is an integer number (16749520).

Almost surely, 2^63648157 is an apocalyptic number.

It is an amenable number.

63648157 is a deficient number, since it is larger than the sum of its proper divisors (3349923).

63648157 is a wasteful number, since it uses less digits than its factorization.

63648157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349922.

The product of its digits is 120960, while the sum is 40.

The square root of 63648157 is about 7977.9795061156. The cubic root of 63648157 is about 399.2656463870.

The spelling of 63648157 in words is "sixty-three million, six hundred forty-eight thousand, one hundred fifty-seven".