76611280 has 20 divisors (see below), whose sum is σ = 178121412. Its totient is φ = 30644480.

The previous prime is 76611253. The next prime is 76611281. The reversal of 76611280 is 8211667.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 55890576 = 4552^2 + 7476^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76611281) 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, 478741 + ... + 478900.

Almost surely, 2^76611280 is an apocalyptic number.

It is an amenable number.

76611280 is an abundant number, since it is smaller than the sum of its proper divisors (101510132).

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

76611280 is a wasteful number, since it uses less digits than its factorization.

76611280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957654 (or 957648 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 76611280 is about 8752.7869847266. The cubic root of 76611280 is about 424.7149738265.

The spelling of 76611280 in words is "seventy-six million, six hundred eleven thousand, two hundred eighty".