87316730 has 8 divisors (see below), whose sum is σ = 157170132. Its totient is φ = 34926688.

The previous prime is 87316729. The next prime is 87316783. The reversal of 87316730 is 3761378.

It can be written as a sum of positive squares in 2 ways, for example, as 85063729 + 2253001 = 9223^2 + 1501^2 .

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

It is a super-2 number, since 2×87316730² = 15248422675785800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4365827 + ... + 4365846.

Almost surely, 2^87316730 is an apocalyptic number.

87316730 is a deficient number, since it is larger than the sum of its proper divisors (69853402).

87316730 is a wasteful number, since it uses less digits than its factorization.

87316730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731680.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 87316730 is about 9344.3421384279. The cubic root of 87316730 is about 443.6418296150.

The spelling of 87316730 in words is "eighty-seven million, three hundred sixteen thousand, seven hundred thirty".