76663331 has 4 divisors (see below), whose sum is σ = 77178000. Its totient is φ = 76148664.

The previous prime is 76663303. The next prime is 76663333. The reversal of 76663331 is 13336667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13336667 = 1399 ⋅9533.

It is a cyclic number.

It is not a de Polignac number, because 76663331 - 2¹⁸ = 76401187 is a prime.

It is a super-2 number, since 2×76663331² = 11754532640031122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 76663291 and 76663300.

It is not an unprimeable number, because it can be changed into a prime (76663333) 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 3 ways as a sum of consecutive naturals, for example, 257111 + ... + 257408.

It is an arithmetic number, because the mean of its divisors is an integer number (19294500).

Almost surely, 2^76663331 is an apocalyptic number.

76663331 is a deficient number, since it is larger than the sum of its proper divisors (514669).

76663331 is a wasteful number, since it uses less digits than its factorization.

76663331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514668.

The product of its digits is 40824, while the sum is 35.

The square root of 76663331 is about 8755.7598756476. The cubic root of 76663331 is about 424.8111382312.

Adding to 76663331 its reverse (13336667), we get a palindrome (89999998).

The spelling of 76663331 in words is "seventy-six million, six hundred sixty-three thousand, three hundred thirty-one".