63663157 has 4 divisors (see below), whose sum is σ = 63682380. Its totient is φ = 63643936.

The previous prime is 63663143. The next prime is 63663163. The reversal of 63663157 is 75136636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 61606801 = 1434^2 + 7849^2 .

It is a cyclic number.

It is not a de Polignac number, because 63663157 - 2¹⁹ = 63138869 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 (63663107) 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, 3232 + ... + 11737.

It is an arithmetic number, because the mean of its divisors is an integer number (15920595).

Almost surely, 2^63663157 is an apocalyptic number.

It is an amenable number.

63663157 is a deficient number, since it is larger than the sum of its proper divisors (19223).

63663157 is a wasteful number, since it uses less digits than its factorization.

63663157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19222.

The product of its digits is 68040, while the sum is 37.

The square root of 63663157 is about 7978.9195383836. The cubic root of 63663157 is about 399.2970089829.

The spelling of 63663157 in words is "sixty-three million, six hundred sixty-three thousand, one hundred fifty-seven".