84640010 has 64 divisors (see below), whose sum is σ = 188745984. Its totient is φ = 26611200.

The previous prime is 84639967. The next prime is 84640027. The reversal of 84640010 is 1004648.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255545 + ... + 255875.

It is an arithmetic number, because the mean of its divisors is an integer number (2949156).

Almost surely, 2^84640010 is an apocalyptic number.

84640010 is an abundant number, since it is smaller than the sum of its proper divisors (104105974).

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

84640010 is a wasteful number, since it uses less digits than its factorization.

84640010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 84640010 is about 9200.0005434782. Note that the first 3 decimals coincide. The cubic root of 84640010 is about 439.0613772213.

Adding to 84640010 its reverse (1004648), we get a palindrome (85644658).

The spelling of 84640010 in words is "eighty-four million, six hundred forty thousand, ten".