76663305 has 24 divisors (see below), whose sum is σ = 133453320. Its totient is φ = 40711680.

The previous prime is 76663303. The next prime is 76663333. The reversal of 76663305 is 50336667.

It can be written as a sum of positive squares in 4 ways, for example, as 10419984 + 66243321 = 3228^2 + 8139^2 .

It is not a de Polignac number, because 76663305 - 2¹ = 76663303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76663305.

It is not an unprimeable number, because it can be changed into a prime (76663303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7311 + ... + 14379.

It is an arithmetic number, because the mean of its divisors is an integer number (5560555).

Almost surely, 2^76663305 is an apocalyptic number.

It is an amenable number.

76663305 is a deficient number, since it is larger than the sum of its proper divisors (56790015).

76663305 is a wasteful number, since it uses less digits than its factorization.

76663305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321 (or 7318 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 76663305 is about 8755.7583909105. The cubic root of 76663305 is about 424.8110902070.

The spelling of 76663305 in words is "seventy-six million, six hundred sixty-three thousand, three hundred five".