84626865 has 12 divisors (see below), whose sum is σ = 146686644. Its totient is φ = 45134304.

The previous prime is 84626851. The next prime is 84626873. The reversal of 84626865 is 56862648.

It can be written as a sum of positive squares in 2 ways, for example, as 61355889 + 23270976 = 7833^2 + 4824^2 .

It is a de Polignac number, because none of the positive numbers 2^k-84626865 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1880597 = 84626865 / (8 + 4 + 6 + 2 + 6 + 8 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84626865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 940254 + ... + 940343.

It is an arithmetic number, because the mean of its divisors is an integer number (12223887).

Almost surely, 2^84626865 is an apocalyptic number.

It is an amenable number.

84626865 is a deficient number, since it is larger than the sum of its proper divisors (62059779).

84626865 is a wasteful number, since it uses less digits than its factorization.

84626865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880608 (or 1880605 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 84626865 is about 9199.2861136069. The cubic root of 84626865 is about 439.0386465978.

It can be divided in two parts, 84626 and 865, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 84626865 in words is "eighty-four million, six hundred twenty-six thousand, eight hundred sixty-five".