88697421 has 12 divisors (see below), whose sum is σ = 128828700. Its totient is φ = 58803840.

The previous prime is 88697419. The next prime is 88697431. The reversal of 88697421 is 12479688.

It can be written as a sum of positive squares in 2 ways, for example, as 39501225 + 49196196 = 6285^2 + 7014^2 .

It is not a de Polignac number, because 88697421 - 2¹ = 88697419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88697431) 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 11 ways as a sum of consecutive naturals, for example, 25596 + ... + 28853.

It is an arithmetic number, because the mean of its divisors is an integer number (10735725).

Almost surely, 2^88697421 is an apocalyptic number.

It is an amenable number.

88697421 is a deficient number, since it is larger than the sum of its proper divisors (40131279).

88697421 is a wasteful number, since it uses less digits than its factorization.

88697421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54636 (or 54633 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 88697421 is about 9417.9308237001. The cubic root of 88697421 is about 445.9679657527.

It can be divided in two parts, 8869742 and 1, that added together give a cube (8869743 = 207³).

The spelling of 88697421 in words is "eighty-eight million, six hundred ninety-seven thousand, four hundred twenty-one".