87417331 has 4 divisors (see below), whose sum is σ = 88850464. Its totient is φ = 85984200.

The previous prime is 87417311. The next prime is 87417353. The reversal of 87417331 is 13371478.

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

It is a cyclic number.

It is not a de Polignac number, because 87417331 - 2⁷ = 87417203 is a prime.

It is a super-2 number, since 2×87417331² = 15283579518327122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87417301) 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, 716475 + ... + 716596.

It is an arithmetic number, because the mean of its divisors is an integer number (22212616).

Almost surely, 2^87417331 is an apocalyptic number.

87417331 is a deficient number, since it is larger than the sum of its proper divisors (1433133).

87417331 is a wasteful number, since it uses less digits than its factorization.

87417331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433132.

The product of its digits is 14112, while the sum is 34.

The square root of 87417331 is about 9349.7235788017. The cubic root of 87417331 is about 443.8121432245.

The spelling of 87417331 in words is "eighty-seven million, four hundred seventeen thousand, three hundred thirty-one".