76663860 has 192 divisors, whose sum is σ = 278476800. Its totient is φ = 15303168.

The previous prime is 76663843. The next prime is 76663861. The reversal of 76663860 is 6836667.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76663861) 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 63 ways as a sum of consecutive naturals, for example, 103371 + ... + 104109.

It is an arithmetic number, because the mean of its divisors is an integer number (1450400).

Almost surely, 2^76663860 is an apocalyptic number.

76663860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76663860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139238400).

76663860 is an abundant number, since it is smaller than the sum of its proper divisors (201812940).

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

76663860 is a wasteful number, since it uses less digits than its factorization.

76663860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 76663860 is about 8755.7900842814. The cubic root of 76663860 is about 424.8121153371.

The spelling of 76663860 in words is "seventy-six million, six hundred sixty-three thousand, eight hundred sixty".