87534437 has 4 divisors (see below), whose sum is σ = 88518060. Its totient is φ = 86550816.

The previous prime is 87534431. The next prime is 87534443. The reversal of 87534437 is 73443578.

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

It is an interprime number because it is at equal distance from previous prime (87534431) and next prime (87534443).

It can be written as a sum of positive squares in 2 ways, for example, as 12348196 + 75186241 = 3514^2 + 8671^2 .

It is a cyclic number.

It is not a de Polignac number, because 87534437 - 2²² = 83340133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87534394 and 87534403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87534431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491678 + ... + 491855.

It is an arithmetic number, because the mean of its divisors is an integer number (22129515).

Almost surely, 2^87534437 is an apocalyptic number.

It is an amenable number.

87534437 is a deficient number, since it is larger than the sum of its proper divisors (983623).

87534437 is an equidigital number, since it uses as much as digits as its factorization.

87534437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983622.

The product of its digits is 282240, while the sum is 41.

The square root of 87534437 is about 9355.9840209355. The cubic root of 87534437 is about 444.0102346611.

The spelling of 87534437 in words is "eighty-seven million, five hundred thirty-four thousand, four hundred thirty-seven".