63999101 has 16 divisors (see below), whose sum is σ = 69755904. Its totient is φ = 58485504.

The previous prime is 63999083. The next prime is 63999121. The reversal of 63999101 is 10199936.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63999101 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 (63999121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137996 + ... + 138458.

It is an arithmetic number, because the mean of its divisors is an integer number (4359744).

Almost surely, 2^63999101 is an apocalyptic number.

It is an amenable number.

63999101 is a deficient number, since it is larger than the sum of its proper divisors (5756803).

63999101 is a wasteful number, since it uses less digits than its factorization.

63999101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 63999101 is about 7999.9438123027. The cubic root of 63999101 is about 399.9981270746.

The spelling of 63999101 in words is "sixty-three million, nine hundred ninety-nine thousand, one hundred one".