87407818 has 8 divisors (see below), whose sum is σ = 134309700. Its totient is φ = 42637920.

The previous prime is 87407807. The next prime is 87407821. The reversal of 87407818 is 81870478.

It can be written as a sum of positive squares in 2 ways, for example, as 84695209 + 2712609 = 9203^2 + 1647^2 .

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

It is a super-2 number, since 2×87407818² = 15280253295042248, 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, 532893 + ... + 533056.

Almost surely, 2^87407818 is an apocalyptic number.

87407818 is a deficient number, since it is larger than the sum of its proper divisors (46901882).

87407818 is a wasteful number, since it uses less digits than its factorization.

87407818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065992.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 87407818 is about 9349.2148333430. The cubic root of 87407818 is about 443.7960436783.

The spelling of 87407818 in words is "eighty-seven million, four hundred seven thousand, eight hundred eighteen".