87582379 has 2 divisors, whose sum is σ = 87582380. Its totient is φ = 87582378.

The previous prime is 87582377. The next prime is 87582427. The reversal of 87582379 is 97328578.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87582379 - 2¹ = 87582377 is a prime.

It is a super-2 number, since 2×87582379² = 15341346222599282, which contains 22 as substring.

Together with 87582377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87582377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43791189 + 43791190.

It is an arithmetic number, because the mean of its divisors is an integer number (43791190).

Almost surely, 2^87582379 is an apocalyptic number.

87582379 is a deficient number, since it is larger than the sum of its proper divisors (1).

87582379 is an equidigital number, since it uses as much as digits as its factorization.

87582379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 87582379 is about 9358.5457737834. The cubic root of 87582379 is about 444.0912803021.

The spelling of 87582379 in words is "eighty-seven million, five hundred eighty-two thousand, three hundred seventy-nine".