84006740 has 24 divisors (see below), whose sum is σ = 176754312. Its totient is φ = 33537920.

The previous prime is 84006739. The next prime is 84006751. The reversal of 84006740 is 4760048.

It can be written as a sum of positive squares in 4 ways, for example, as 1669264 + 82337476 = 1292^2 + 9074^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7370 + ... + 14910.

It is an arithmetic number, because the mean of its divisors is an integer number (7364763).

Almost surely, 2^84006740 is an apocalyptic number.

It is an amenable number.

84006740 is an abundant number, since it is smaller than the sum of its proper divisors (92747572).

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

84006740 is a wasteful number, since it uses less digits than its factorization.

84006740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107 (or 8105 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 84006740 is about 9165.5190796812. The cubic root of 84006740 is about 437.9636271513.

Adding to 84006740 its reverse (4760048), we get a palindrome (88766788).

The spelling of 84006740 in words is "eighty-four million, six thousand, seven hundred forty".