87779214 has 40 divisors (see below), whose sum is σ = 197405208. Its totient is φ = 29153520.

The previous prime is 87779213. The next prime is 87779233. The reversal of 87779214 is 41297778.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87779214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87779213) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52804 + ... + 54440.

Almost surely, 2^87779214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87779214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98702604).

87779214 is an abundant number, since it is smaller than the sum of its proper divisors (109625994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87779214 is a wasteful number, since it uses less digits than its factorization.

87779214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1973 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 87779214 is about 9369.0561957969. The cubic root of 87779214 is about 444.4237189548.

The spelling of 87779214 in words is "eighty-seven million, seven hundred seventy-nine thousand, two hundred fourteen".