84663769 has 2 divisors, whose sum is σ = 84663770. Its totient is φ = 84663768.

The previous prime is 84663749. The next prime is 84663793. The reversal of 84663769 is 96736648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64593369 + 20070400 = 8037^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 84663769 - 2¹¹ = 84661721 is a prime.

It is a super-2 number, since 2×84663769² = 14335907562570722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84663749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42331884 + 42331885.

It is an arithmetic number, because the mean of its divisors is an integer number (42331885).

Almost surely, 2^84663769 is an apocalyptic number.

It is an amenable number.

84663769 is a deficient number, since it is larger than the sum of its proper divisors (1).

84663769 is an equidigital number, since it uses as much as digits as its factorization.

84663769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 84663769 is about 9201.2917027991. The cubic root of 84663769 is about 439.1024558370.

The spelling of 84663769 in words is "eighty-four million, six hundred sixty-three thousand, seven hundred sixty-nine".