86724533 has 4 divisors (see below), whose sum is σ = 99113760. Its totient is φ = 74335308.

The previous prime is 86724523. The next prime is 86724563. The reversal of 86724533 is 33542768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86724533 - 2¹² = 86720437 is a prime.

It is a super-2 number, since 2×86724533² = 15042289248136178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86724503) 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, 6194603 + ... + 6194616.

It is an arithmetic number, because the mean of its divisors is an integer number (24778440).

Almost surely, 2^86724533 is an apocalyptic number.

It is an amenable number.

86724533 is a deficient number, since it is larger than the sum of its proper divisors (12389227).

86724533 is a wasteful number, since it uses less digits than its factorization.

86724533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12389226.

The product of its digits is 120960, while the sum is 38.

The square root of 86724533 is about 9312.6007645555. The cubic root of 86724533 is about 442.6366020427.

The spelling of 86724533 in words is "eighty-six million, seven hundred twenty-four thousand, five hundred thirty-three".