63802081 has 4 divisors (see below), whose sum is σ = 72916672. Its totient is φ = 54687492.

The previous prime is 63802051. The next prime is 63802087. The reversal of 63802081 is 18020836.

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 63802081 - 2⁷ = 63801953 is a prime.

It is a super-2 number, since 2×63802081² = 8141411079861122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63802087) 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, 4557285 + ... + 4557298.

It is an arithmetic number, because the mean of its divisors is an integer number (18229168).

Almost surely, 2^63802081 is an apocalyptic number.

It is an amenable number.

63802081 is a deficient number, since it is larger than the sum of its proper divisors (9114591).

63802081 is an equidigital number, since it uses as much as digits as its factorization.

63802081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114590.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 63802081 is about 7987.6204842243. The cubic root of 63802081 is about 399.5872429756.

The spelling of 63802081 in words is "sixty-three million, eight hundred two thousand, eighty-one".