87260279 has 4 divisors (see below), whose sum is σ = 87926520. Its totient is φ = 86594040.

The previous prime is 87260267. The next prime is 87260309. The reversal of 87260279 is 97206278.

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 87260279 - 2²⁰ = 86211703 is a prime.

It is a super-2 number, since 2×87260279² = 15228712582315682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87260209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332924 + ... + 333185.

It is an arithmetic number, because the mean of its divisors is an integer number (21981630).

Almost surely, 2^87260279 is an apocalyptic number.

87260279 is a deficient number, since it is larger than the sum of its proper divisors (666241).

87260279 is a wasteful number, since it uses less digits than its factorization.

87260279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666240.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 87260279 is about 9341.3210521853. The cubic root of 87260279 is about 443.5462029468.

The spelling of 87260279 in words is "eighty-seven million, two hundred sixty thousand, two hundred seventy-nine".