87280579 has 4 divisors (see below), whose sum is σ = 87768360. Its totient is φ = 86792800.

The previous prime is 87280577. The next prime is 87280591. The reversal of 87280579 is 97508278.

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 87280579 - 2¹ = 87280577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87280577) 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, 243622 + ... + 243979.

It is an arithmetic number, because the mean of its divisors is an integer number (21942090).

Almost surely, 2^87280579 is an apocalyptic number.

87280579 is a deficient number, since it is larger than the sum of its proper divisors (487781).

87280579 is a wasteful number, since it uses less digits than its factorization.

87280579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487780.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 87280579 is about 9342.4075590824. The cubic root of 87280579 is about 443.5805954175.

The spelling of 87280579 in words is "eighty-seven million, two hundred eighty thousand, five hundred seventy-nine".