84625640 has 64 divisors (see below), whose sum is σ = 212829120. Its totient is φ = 30016000.

The previous prime is 84625637. The next prime is 84625649. The reversal of 84625640 is 4652648.

It is a super-2 number, since 2×84625640² = 14322997890819200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84625640.

It is not an unprimeable number, because it can be changed into a prime (84625649) 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 15 ways as a sum of consecutive naturals, for example, 15695 + ... + 20385.

It is an arithmetic number, because the mean of its divisors is an integer number (3325455).

Almost surely, 2^84625640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84625640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106414560).

84625640 is an abundant number, since it is smaller than the sum of its proper divisors (128203480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84625640 is a wasteful number, since it uses less digits than its factorization.

84625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754 (or 4750 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 84625640 is about 9199.2195321125. The cubic root of 84625640 is about 439.0365281809.

The spelling of 84625640 in words is "eighty-four million, six hundred twenty-five thousand, six hundred forty".