86437021 has 8 divisors (see below), whose sum is σ = 97337088. Its totient is φ = 76044000.

The previous prime is 86437003. The next prime is 86437031. The reversal of 86437021 is 12073468.

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 86437021 - 2¹³ = 86428829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86437031) 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, 126400 + ... + 127081.

It is an arithmetic number, because the mean of its divisors is an integer number (12167136).

Almost surely, 2^86437021 is an apocalyptic number.

It is an amenable number.

86437021 is a deficient number, since it is larger than the sum of its proper divisors (10900067).

86437021 is a wasteful number, since it uses less digits than its factorization.

86437021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253523.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 86437021 is about 9297.1512303501. The cubic root of 86437021 is about 442.1469127327.

The spelling of 86437021 in words is "eighty-six million, four hundred thirty-seven thousand, twenty-one".