76771572 has 12 divisors (see below), whose sum is σ = 179133696. Its totient is φ = 25590520.

The previous prime is 76771561. The next prime is 76771573. The reversal of 76771572 is 27517767.

It is a happy number.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76771573) 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 3 ways as a sum of consecutive naturals, for example, 3198804 + ... + 3198827.

It is an arithmetic number, because the mean of its divisors is an integer number (14927808).

Almost surely, 2^76771572 is an apocalyptic number.

It is an amenable number.

76771572 is an abundant number, since it is smaller than the sum of its proper divisors (102362124).

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

76771572 is a wasteful number, since it uses less digits than its factorization.

76771572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397638 (or 6397636 counting only the distinct ones).

The product of its digits is 144060, while the sum is 42.

The square root of 76771572 is about 8761.9388265383. The cubic root of 76771572 is about 425.0109745724.

The spelling of 76771572 in words is "seventy-six million, seven hundred seventy-one thousand, five hundred seventy-two".