84630740 has 12 divisors (see below), whose sum is σ = 177724596. Its totient is φ = 33852288.

The previous prime is 84630739. The next prime is 84630781. The reversal of 84630740 is 4703648.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52504516 + 32126224 = 7246^2 + 5668^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84630697 and 84630706.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2115749 + ... + 2115788.

It is an arithmetic number, because the mean of its divisors is an integer number (14810383).

Almost surely, 2^84630740 is an apocalyptic number.

It is an amenable number.

84630740 is an abundant number, since it is smaller than the sum of its proper divisors (93093856).

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

84630740 is a wasteful number, since it uses less digits than its factorization.

84630740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231546 (or 4231544 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 84630740 is about 9199.4967253649. The cubic root of 84630740 is about 439.0453475778.

The spelling of 84630740 in words is "eighty-four million, six hundred thirty thousand, seven hundred forty".