67769869 has 2 divisors, whose sum is σ = 67769870. Its totient is φ = 67769868.

The previous prime is 67769831. The next prime is 67769873. The reversal of 67769869 is 96896776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 12460900 = 7437^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 67769869 - 2¹⁷ = 67638797 is a prime.

It is a super-2 number, since 2×67769869² = 9185510288554322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67769899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33884934 + 33884935.

It is an arithmetic number, because the mean of its divisors is an integer number (33884935).

Almost surely, 2^67769869 is an apocalyptic number.

It is an amenable number.

67769869 is a deficient number, since it is larger than the sum of its proper divisors (1).

67769869 is an equidigital number, since it uses as much as digits as its factorization.

67769869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 58.

The square root of 67769869 is about 8232.2456838945. The cubic root of 67769869 is about 407.7045410730.

The spelling of 67769869 in words is "sixty-seven million, seven hundred sixty-nine thousand, eight hundred sixty-nine".