67632869 has 2 divisors, whose sum is σ = 67632870. Its totient is φ = 67632868.

The previous prime is 67632841. The next prime is 67632883. The reversal of 67632869 is 96823676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59876644 + 7756225 = 7738^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 67632869 - 2²⁰ = 66584293 is a prime.

It is a super-2 number, since 2×67632869² = 9148409938342322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67632809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33816434 + 33816435.

It is an arithmetic number, because the mean of its divisors is an integer number (33816435).

Almost surely, 2^67632869 is an apocalyptic number.

It is an amenable number.

67632869 is a deficient number, since it is larger than the sum of its proper divisors (1).

67632869 is an equidigital number, since it uses as much as digits as its factorization.

67632869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 67632869 is about 8223.9205370675. The cubic root of 67632869 is about 407.4296243906.

The spelling of 67632869 in words is "sixty-seven million, six hundred thirty-two thousand, eight hundred sixty-nine".