87233913 has 36 divisors (see below), whose sum is σ = 138286512. Its totient is φ = 52958880.

The previous prime is 87233911. The next prime is 87233929. The reversal of 87233913 is 31933278.

It is a happy number.

It is not a de Polignac number, because 87233913 - 2¹ = 87233911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87233911) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 125898 + ... + 126588.

It is an arithmetic number, because the mean of its divisors is an integer number (3841292).

Almost surely, 2^87233913 is an apocalyptic number.

87233913 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

87233913 is a deficient number, since it is larger than the sum of its proper divisors (51052599).

87233913 is a wasteful number, since it uses less digits than its factorization.

87233913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 790 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 87233913 is about 9339.9096890709. The cubic root of 87233913 is about 443.5015254319.

The spelling of 87233913 in words is "eighty-seven million, two hundred thirty-three thousand, nine hundred thirteen".