86531437 has 8 divisors (see below), whose sum is σ = 88690976. Its totient is φ = 84378672.

The previous prime is 86531429. The next prime is 86531477. The reversal of 86531437 is 73413568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86531437 - 2³ = 86531429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86531396 and 86531405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86531477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32563 + ... + 35119.

It is an arithmetic number, because the mean of its divisors is an integer number (11086372).

Almost surely, 2^86531437 is an apocalyptic number.

It is an amenable number.

86531437 is a deficient number, since it is larger than the sum of its proper divisors (2159539).

86531437 is a wasteful number, since it uses less digits than its factorization.

86531437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387.

The product of its digits is 60480, while the sum is 37.

The square root of 86531437 is about 9302.2275289309. The cubic root of 86531437 is about 442.3078412788.

It can be divided in two parts, 86531 and 437, that added together give a palindrome (86968).

The spelling of 86531437 in words is "eighty-six million, five hundred thirty-one thousand, four hundred thirty-seven".