76220757 has 40 divisors (see below), whose sum is σ = 117394200. Its totient is φ = 49268736.

The previous prime is 76220719. The next prime is 76220759. The reversal of 76220757 is 75702267.

It can be written as a sum of positive squares in 4 ways, for example, as 6765201 + 69455556 = 2601^2 + 8334^2 .

It is a de Polignac number, because none of the positive numbers 2^k-76220757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76220759) 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 39 ways as a sum of consecutive naturals, for example, 699219 + ... + 699327.

It is an arithmetic number, because the mean of its divisors is an integer number (2934855).

Almost surely, 2^76220757 is an apocalyptic number.

It is an amenable number.

76220757 is a deficient number, since it is larger than the sum of its proper divisors (41173443).

76220757 is a wasteful number, since it uses less digits than its factorization.

76220757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 76220757 is about 8730.4499884027. The cubic root of 76220757 is about 423.9920881548.

The spelling of 76220757 in words is "seventy-six million, two hundred twenty thousand, seven hundred fifty-seven".