76505866 has 16 divisors (see below), whose sum is σ = 120118464. Its totient is φ = 36476704.

The previous prime is 76505839. The next prime is 76505867. The reversal of 76505866 is 66850567.

It is not an unprimeable number, because it can be changed into a prime (76505867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13566 + ... + 18358.

It is an arithmetic number, because the mean of its divisors is an integer number (7507404).

Almost surely, 2^76505866 is an apocalyptic number.

76505866 is a deficient number, since it is larger than the sum of its proper divisors (43612598).

76505866 is a wasteful number, since it uses less digits than its factorization.

76505866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 76505866 is about 8746.7631727400. The cubic root of 76505866 is about 424.5200875806.

The spelling of 76505866 in words is "seventy-six million, five hundred five thousand, eight hundred sixty-six".