87725311 has 4 divisors (see below), whose sum is σ = 89034712. Its totient is φ = 86415912.

The previous prime is 87725303. The next prime is 87725317. The reversal of 87725311 is 11352778.

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 87725311 - 2³ = 87725303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87725317) 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, 654600 + ... + 654733.

It is an arithmetic number, because the mean of its divisors is an integer number (22258678).

Almost surely, 2^87725311 is an apocalyptic number.

87725311 is a deficient number, since it is larger than the sum of its proper divisors (1309401).

87725311 is a wasteful number, since it uses less digits than its factorization.

87725311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309400.

The product of its digits is 11760, while the sum is 34.

The square root of 87725311 is about 9366.1791035619. The cubic root of 87725311 is about 444.3327305312.

The spelling of 87725311 in words is "eighty-seven million, seven hundred twenty-five thousand, three hundred eleven".