76663642 has 16 divisors (see below), whose sum is σ = 132829632. Its totient is φ = 32797120.

The previous prime is 76663637. The next prime is 76663673. The reversal of 76663642 is 24636667.

It is a junction number, because it is equal to n+sod(n) for n = 76663595 and 76663604.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 102118 + ... + 102865.

It is an arithmetic number, because the mean of its divisors is an integer number (8301852).

Almost surely, 2^76663642 is an apocalyptic number.

76663642 is a deficient number, since it is larger than the sum of its proper divisors (56165990).

76663642 is a wasteful number, since it uses less digits than its factorization.

76663642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205013.

The product of its digits is 217728, while the sum is 40.

The square root of 76663642 is about 8755.7776353674. Note that the first 3 decimals coincide. The cubic root of 76663642 is about 424.8117126740.

The spelling of 76663642 in words is "seventy-six million, six hundred sixty-three thousand, six hundred forty-two".