84636669 has 24 divisors (see below), whose sum is σ = 124662496. Its totient is φ = 50774400.

The previous prime is 84636667. The next prime is 84636691. The reversal of 84636669 is 96663648.

It is not a de Polignac number, because 84636669 - 2¹ = 84636667 is a prime.

It is a super-2 number, since 2×84636669² = 14326731478831122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84636667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64914 + ... + 66204.

Almost surely, 2^84636669 is an apocalyptic number.

It is an amenable number.

84636669 is a deficient number, since it is larger than the sum of its proper divisors (40025827).

84636669 is a wasteful number, since it uses less digits than its factorization.

84636669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1348 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The square root of 84636669 is about 9199.8189656101. The cubic root of 84636669 is about 439.0556001136.

The spelling of 84636669 in words is "eighty-four million, six hundred thirty-six thousand, six hundred sixty-nine".