84724564866 has 32 divisors (see below), whose sum is σ = 173678100480. Its totient is φ = 27544232016.

The previous prime is 84724564843. The next prime is 84724564877. The reversal of 84724564866 is 66846542748.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897306 + ... + 987221.

It is an arithmetic number, because the mean of its divisors is an integer number (5427440640).

Almost surely, 2^84724564866 is an apocalyptic number.

84724564866 is an abundant number, since it is smaller than the sum of its proper divisors (88953535614).

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

84724564866 is a wasteful number, since it uses less digits than its factorization.

84724564866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884718.

The product of its digits is 61931520, while the sum is 60.

The spelling of 84724564866 in words is "eighty-four billion, seven hundred twenty-four million, five hundred sixty-four thousand, eight hundred sixty-six".