87867157 has 4 divisors (see below), whose sum is σ = 100419616. Its totient is φ = 75314700.

The previous prime is 87867151. The next prime is 87867161. The reversal of 87867157 is 75176878.

87867157 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87867157 - 2¹⁵ = 87834389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87867157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87867151) 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, 6276219 + ... + 6276232.

It is an arithmetic number, because the mean of its divisors is an integer number (25104904).

Almost surely, 2^87867157 is an apocalyptic number.

It is an amenable number.

87867157 is a deficient number, since it is larger than the sum of its proper divisors (12552459).

87867157 is a wasteful number, since it uses less digits than its factorization.

87867157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552458.

The product of its digits is 658560, while the sum is 49.

The square root of 87867157 is about 9373.7482897718. The cubic root of 87867157 is about 444.5720870718.

The spelling of 87867157 in words is "eighty-seven million, eight hundred sixty-seven thousand, one hundred fifty-seven".