87490307 has 4 divisors (see below), whose sum is σ = 92095080. Its totient is φ = 82885536.

The previous prime is 87490283. The next prime is 87490343. The reversal of 87490307 is 70309478.

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 87490307 - 2²⁶ = 20381443 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87490357) 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, 2302358 + ... + 2302395.

It is an arithmetic number, because the mean of its divisors is an integer number (23023770).

Almost surely, 2^87490307 is an apocalyptic number.

87490307 is a deficient number, since it is larger than the sum of its proper divisors (4604773).

87490307 is a wasteful number, since it uses less digits than its factorization.

87490307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604772.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87490307 is about 9353.6253399417. The cubic root of 87490307 is about 443.9356070212.

The spelling of 87490307 in words is "eighty-seven million, four hundred ninety thousand, three hundred seven".