77890884 has 12 divisors (see below), whose sum is σ = 181745424. Its totient is φ = 25963624.

The previous prime is 77890859. The next prime is 77890909. The reversal of 77890884 is 48809877.

It is an interprime number because it is at equal distance from previous prime (77890859) and next prime (77890909).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245442 + ... + 3245465.

It is an arithmetic number, because the mean of its divisors is an integer number (15145452).

Almost surely, 2^77890884 is an apocalyptic number.

It is an amenable number.

77890884 is an abundant number, since it is smaller than the sum of its proper divisors (103854540).

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

77890884 is a wasteful number, since it uses less digits than its factorization.

77890884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490914 (or 6490912 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 77890884 is about 8825.5812273187. The cubic root of 77890884 is about 427.0665378306.

The spelling of 77890884 in words is "seventy-seven million, eight hundred ninety thousand, eight hundred eighty-four".