88166401 has 4 divisors (see below), whose sum is σ = 89829972. Its totient is φ = 86502832.

The previous prime is 88166389. The next prime is 88166417. The reversal of 88166401 is 10466188.

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 43877376 + 44289025 = 6624^2 + 6655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88166401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88169401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831706 + ... + 831811.

It is an arithmetic number, because the mean of its divisors is an integer number (22457493).

Almost surely, 2^88166401 is an apocalyptic number.

It is an amenable number.

88166401 is a deficient number, since it is larger than the sum of its proper divisors (1663571).

88166401 is a wasteful number, since it uses less digits than its factorization.

88166401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663570.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 88166401 is about 9389.6965339674. The cubic root of 88166401 is about 445.0761995506.

The spelling of 88166401 in words is "eighty-eight million, one hundred sixty-six thousand, four hundred one".