76144865 has 8 divisors (see below), whose sum is σ = 94524840. Its totient is φ = 58815232.

The previous prime is 76144847. The next prime is 76144867. The reversal of 76144865 is 56844167.

It can be written as a sum of positive squares in 4 ways, for example, as 30393169 + 45751696 = 5513^2 + 6764^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76144865 - 2⁶ = 76144801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76144867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262424 + ... + 262713.

It is an arithmetic number, because the mean of its divisors is an integer number (11815605).

Almost surely, 2^76144865 is an apocalyptic number.

It is an amenable number.

76144865 is a deficient number, since it is larger than the sum of its proper divisors (18379975).

76144865 is a wasteful number, since it uses less digits than its factorization.

76144865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525171.

The product of its digits is 161280, while the sum is 41.

The square root of 76144865 is about 8726.1025091389. The cubic root of 76144865 is about 423.8513203188.

The spelling of 76144865 in words is "seventy-six million, one hundred forty-four thousand, eight hundred sixty-five".