87878357 has 4 divisors (see below), whose sum is σ = 100432416. Its totient is φ = 75324300.

The previous prime is 87878347. The next prime is 87878359. The reversal of 87878357 is 75387878.

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 87878357 - 2¹⁴ = 87861973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87878299 and 87878308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87878359) 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, 6277019 + ... + 6277032.

It is an arithmetic number, because the mean of its divisors is an integer number (25108104).

Almost surely, 2^87878357 is an apocalyptic number.

It is an amenable number.

87878357 is a deficient number, since it is larger than the sum of its proper divisors (12554059).

87878357 is a wasteful number, since it uses less digits than its factorization.

87878357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12554058.

The product of its digits is 2634240, while the sum is 53.

The square root of 87878357 is about 9374.3456838331. The cubic root of 87878357 is about 444.5909754180.

The spelling of 87878357 in words is "eighty-seven million, eight hundred seventy-eight thousand, three hundred fifty-seven".