84861513 has 80 divisors (see below), whose sum is σ = 149288832. Its totient is φ = 47520000.

The previous prime is 84861503. The next prime is 84861541. The reversal of 84861513 is 31516848.

84861513 is a `hidden beast` number, since 84 + 8 + 61 + 513 = 666.

It is not a de Polignac number, because 84861513 - 2⁵ = 84861481 is a prime.

It is a super-3 number, since 3×84861513³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (84861503) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 840163 + ... + 840263.

Almost surely, 2^84861513 is an apocalyptic number.

It is an amenable number.

84861513 is a deficient number, since it is larger than the sum of its proper divisors (64427319).

84861513 is a wasteful number, since it uses less digits than its factorization.

84861513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 179 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 84861513 is about 9212.0308835783. The cubic root of 84861513 is about 439.4440516324. Note that the first 3 decimals are identical.

It can be divided in two parts, 8486 and 1513, that added together give a palindrome (9999).

The spelling of 84861513 in words is "eighty-four million, eight hundred sixty-one thousand, five hundred thirteen".