88778221 has 8 divisors (see below), whose sum is σ = 102409920. Its totient is φ = 75383808.

The previous prime is 88778219. The next prime is 88778299. The reversal of 88778221 is 12287788.

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

It is a cyclic number.

It is not a de Polignac number, because 88778221 - 2¹ = 88778219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88778821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58516 + ... + 60013.

It is an arithmetic number, because the mean of its divisors is an integer number (12801240).

Almost surely, 2^88778221 is an apocalyptic number.

It is an amenable number.

88778221 is a deficient number, since it is larger than the sum of its proper divisors (13631699).

88778221 is a wasteful number, since it uses less digits than its factorization.

88778221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118643.

The product of its digits is 100352, while the sum is 43.

The square root of 88778221 is about 9422.2195368183. The cubic root of 88778221 is about 446.1033446428.

The spelling of 88778221 in words is "eighty-eight million, seven hundred seventy-eight thousand, two hundred twenty-one".