84689613 has 12 divisors (see below), whose sum is σ = 126275968. Its totient is φ = 54638280.

The previous prime is 84689609. The next prime is 84689617. The reversal of 84689613 is 31698648.

It is an interprime number because it is at equal distance from previous prime (84689609) and next prime (84689617).

It is not a de Polignac number, because 84689613 - 2² = 84689609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84689617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151495 + ... + 152052.

Almost surely, 2^84689613 is an apocalyptic number.

It is an amenable number.

84689613 is a deficient number, since it is larger than the sum of its proper divisors (41586355).

84689613 is a wasteful number, since it uses less digits than its factorization.

84689613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303584 (or 303581 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 84689613 is about 9202.6959636837. The cubic root of 84689613 is about 439.1471306313.

It can be divided in two parts, 8468 and 9613, that added together give a palindrome (18081).

The spelling of 84689613 in words is "eighty-four million, six hundred eighty-nine thousand, six hundred thirteen".