88999645 has 16 divisors (see below), whose sum is σ = 122277888. Its totient is φ = 60917760.

The previous prime is 88999633. The next prime is 88999649. The reversal of 88999645 is 54699988.

It is not a de Polignac number, because 88999645 - 2⁹ = 88999133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88999645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88999649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20452 + ... + 24418.

It is an arithmetic number, because the mean of its divisors is an integer number (7642368).

Almost surely, 2^88999645 is an apocalyptic number.

It is an amenable number.

88999645 is a deficient number, since it is larger than the sum of its proper divisors (33278243).

88999645 is a wasteful number, since it uses less digits than its factorization.

88999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620.

The product of its digits is 5598720, while the sum is 58.

The square root of 88999645 is about 9433.9623170755. The cubic root of 88999645 is about 446.4739159305.

The spelling of 88999645 in words is "eighty-eight million, nine hundred ninety-nine thousand, six hundred forty-five".