64099099684 has 27 divisors (see below), whose sum is σ = 112826729043. Its totient is φ = 31863970368.

The previous prime is 64099099681. The next prime is 64099099739. The reversal of 64099099684 is 48699099046.

The square root of 64099099684 is 253178.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 171034084 + 63928065600 = 13078^2 + 252840^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64099099681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 140260384 + ... + 140260840.

Almost surely, 2^64099099684 is an apocalyptic number.

64099099684 is the 253178-th square number.

It is an amenable number.

64099099684 is a deficient number, since it is larger than the sum of its proper divisors (48727629359).

64099099684 is an frugal number, since it uses more digits than its factorization.

64099099684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 64.

Multiplying 64099099684 by its sum of digits (64), we get a square (4102342379776 = 2025424²).

The spelling of 64099099684 in words is "sixty-four billion, ninety-nine million, ninety-nine thousand, six hundred eighty-four".