63998153 has 2 divisors, whose sum is σ = 63998154. Its totient is φ = 63998152.

The previous prime is 63998119. The next prime is 63998159. The reversal of 63998153 is 35189936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54213769 + 9784384 = 7363^2 + 3128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63998153 is a prime.

It is a super-2 number, since 2×63998153² = 8191527174822818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63998159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31999076 + 31999077.

It is an arithmetic number, because the mean of its divisors is an integer number (31999077).

Almost surely, 2^63998153 is an apocalyptic number.

It is an amenable number.

63998153 is a deficient number, since it is larger than the sum of its proper divisors (1).

63998153 is an equidigital number, since it uses as much as digits as its factorization.

63998153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 63998153 is about 7999.8845616671. The cubic root of 63998153 is about 399.9961520463.

The spelling of 63998153 in words is "sixty-three million, nine hundred ninety-eight thousand, one hundred fifty-three".