87380973 has 12 divisors (see below), whose sum is σ = 130569660. Its totient is φ = 56245056.

The previous prime is 87380957. The next prime is 87380983. The reversal of 87380973 is 37908378.

It can be written as a sum of positive squares in 2 ways, for example, as 35497764 + 51883209 = 5958^2 + 7203^2 .

It is not a de Polignac number, because 87380973 - 2⁴ = 87380957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87380903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167136 + ... + 167657.

It is an arithmetic number, because the mean of its divisors is an integer number (10880805).

Almost surely, 2^87380973 is an apocalyptic number.

It is an amenable number.

87380973 is a deficient number, since it is larger than the sum of its proper divisors (43188687).

87380973 is a wasteful number, since it uses less digits than its factorization.

87380973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334828 (or 334825 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 87380973 is about 9347.7790410343. The cubic root of 87380973 is about 443.7506056198.

The spelling of 87380973 in words is "eighty-seven million, three hundred eighty thousand, nine hundred seventy-three".