88641819 has 24 divisors (see below), whose sum is σ = 146746080. Its totient is φ = 50508288.

The previous prime is 88641799. The next prime is 88641823. The reversal of 88641819 is 91814688.

It is not a de Polignac number, because 88641819 - 2¹⁵ = 88609051 is a prime.

It is a super-2 number, since 2×88641819² = 15714744151257522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (88641919) 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 in 23 ways as a sum of consecutive naturals, for example, 22699 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (6114420).

Almost surely, 2^88641819 is an apocalyptic number.

88641819 is a deficient number, since it is larger than the sum of its proper divisors (58104261).

88641819 is a wasteful number, since it uses less digits than its factorization.

88641819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019 (or 4016 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 88641819 is about 9414.9784386370. The cubic root of 88641819 is about 445.8747578788.

The spelling of 88641819 in words is "eighty-eight million, six hundred forty-one thousand, eight hundred nineteen".