76989550 has 24 divisors (see below), whose sum is σ = 156219912. Its totient is φ = 27996000.

The previous prime is 76989541. The next prime is 76989557. The reversal of 76989550 is 5598967.

It is a junction number, because it is equal to n+sod(n) for n = 76989494 and 76989503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76989557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69441 + ... + 70540.

It is an arithmetic number, because the mean of its divisors is an integer number (6509163).

Almost surely, 2^76989550 is an apocalyptic number.

76989550 is an abundant number, since it is smaller than the sum of its proper divisors (79230362).

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

76989550 is a wasteful number, since it uses less digits than its factorization.

76989550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140004 (or 139999 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 76989550 is about 8774.3689231762. The cubic root of 76989550 is about 425.4128399035.

The spelling of 76989550 in words is "seventy-six million, nine hundred eighty-nine thousand, five hundred fifty".