88778619 has 8 divisors (see below), whose sum is σ = 131523920. Its totient is φ = 59185728.

The previous prime is 88778611. The next prime is 88778663. The reversal of 88778619 is 91687788.

It is not a de Polignac number, because 88778619 - 2³ = 88778611 is a prime.

It is a super-2 number, since 2×88778619² = 15763286383094322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88778611) 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, 1644022 + ... + 1644075.

It is an arithmetic number, because the mean of its divisors is an integer number (16440490).

Almost surely, 2^88778619 is an apocalyptic number.

88778619 is a deficient number, since it is larger than the sum of its proper divisors (42745301).

88778619 is a wasteful number, since it uses less digits than its factorization.

88778619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288106 (or 3288100 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The square root of 88778619 is about 9422.2406570836. The cubic root of 88778619 is about 446.1040112810.

The spelling of 88778619 in words is "eighty-eight million, seven hundred seventy-eight thousand, six hundred nineteen".