87806351 has 4 divisors (see below), whose sum is σ = 87850512. Its totient is φ = 87762192.

The previous prime is 87806273. The next prime is 87806357. The reversal of 87806351 is 15360878.

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 87806351 - 2²⁶ = 20697487 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 (87806357) 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, 18950 + ... + 23123.

It is an arithmetic number, because the mean of its divisors is an integer number (21962628).

Almost surely, 2^87806351 is an apocalyptic number.

87806351 is a deficient number, since it is larger than the sum of its proper divisors (44161).

87806351 is a wasteful number, since it uses less digits than its factorization.

87806351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44160.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 87806351 is about 9370.5043087339. The cubic root of 87806351 is about 444.4695121949.

The spelling of 87806351 in words is "eighty-seven million, eight hundred six thousand, three hundred fifty-one".