88161637 has 4 divisors (see below), whose sum is σ = 88609356. Its totient is φ = 87713920.

The previous prime is 88161629. The next prime is 88161683. The reversal of 88161637 is 73616188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81613156 + 6548481 = 9034^2 + 2559^2 .

It is a cyclic number.

It is not a de Polignac number, because 88161637 - 2³ = 88161629 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 88161637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88161037) 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 3 ways as a sum of consecutive naturals, for example, 223564 + ... + 223957.

It is an arithmetic number, because the mean of its divisors is an integer number (22152339).

Almost surely, 2^88161637 is an apocalyptic number.

It is an amenable number.

88161637 is a deficient number, since it is larger than the sum of its proper divisors (447719).

88161637 is a wasteful number, since it uses less digits than its factorization.

88161637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447718.

The product of its digits is 48384, while the sum is 40.

The square root of 88161637 is about 9389.4428482205. The cubic root of 88161637 is about 445.0681829624.

The spelling of 88161637 in words is "eighty-eight million, one hundred sixty-one thousand, six hundred thirty-seven".