81088629 has 8 divisors (see below), whose sum is σ = 108488352. Its totient is φ = 53874000.

The previous prime is 81088621. The next prime is 81088643. The reversal of 81088629 is 92688018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81088629 - 2³ = 81088621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81088621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45247 + ... + 47004.

It is an arithmetic number, because the mean of its divisors is an integer number (13561044).

Almost surely, 2^81088629 is an apocalyptic number.

It is an amenable number.

81088629 is a deficient number, since it is larger than the sum of its proper divisors (27399723).

81088629 is a wasteful number, since it uses less digits than its factorization.

81088629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92547.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 81088629 is about 9004.9224871733. The cubic root of 81088629 is about 432.8326223811.

The spelling of 81088629 in words is "eighty-one million, eighty-eight thousand, six hundred twenty-nine".