63523819 has 2 divisors, whose sum is σ = 63523820. Its totient is φ = 63523818.

The previous prime is 63523807. The next prime is 63523829. The reversal of 63523819 is 91832536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63523819 - 2⁵ = 63523787 is a prime.

It is a super-2 number, since 2×63523819² = 8070551160689522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63523829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31761909 + 31761910.

It is an arithmetic number, because the mean of its divisors is an integer number (31761910).

Almost surely, 2^63523819 is an apocalyptic number.

63523819 is a deficient number, since it is larger than the sum of its proper divisors (1).

63523819 is an equidigital number, since it uses as much as digits as its factorization.

63523819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 63523819 is about 7970.1831221121. The cubic root of 63523819 is about 399.0054856523.

The spelling of 63523819 in words is "sixty-three million, five hundred twenty-three thousand, eight hundred nineteen".