67630331 has 2 divisors, whose sum is σ = 67630332. Its totient is φ = 67630330.

The previous prime is 67630319. The next prime is 67630351. The reversal of 67630331 is 13303676.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67630331 is a prime.

It is a super-2 number, since 2×67630331² = 9147723342339122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67630294 and 67630303.

It is not a weakly prime, because it can be changed into another prime (67630351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33815165 + 33815166.

It is an arithmetic number, because the mean of its divisors is an integer number (33815166).

Almost surely, 2^67630331 is an apocalyptic number.

67630331 is a deficient number, since it is larger than the sum of its proper divisors (1).

67630331 is an equidigital number, since it uses as much as digits as its factorization.

67630331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 67630331 is about 8223.7662296541. The cubic root of 67630331 is about 407.4245279075.

The spelling of 67630331 in words is "sixty-seven million, six hundred thirty thousand, three hundred thirty-one".