6490332985 has 16 divisors (see below), whose sum is σ = 8027837136. Its totient is φ = 5033657088.

The previous prime is 6490332967. The next prime is 6490332997. The reversal of 6490332985 is 5892330946.

It can be written as a sum of positive squares in 8 ways, for example, as 345811216 + 6144521769 = 18596^2 + 78387^2 .

It is a cyclic number.

It is not a de Polignac number, because 6490332985 - 2¹³ = 6490324793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12082 + ... + 114571.

It is an arithmetic number, because the mean of its divisors is an integer number (501739821).

Almost surely, 2^6490332985 is an apocalyptic number.

It is an amenable number.

6490332985 is a deficient number, since it is larger than the sum of its proper divisors (1537504151).

6490332985 is a wasteful number, since it uses less digits than its factorization.

6490332985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126972.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 6490332985 is about 80562.6028936504. The cubic root of 6490332985 is about 1865.3299336983.

The spelling of 6490332985 in words is "six billion, four hundred ninety million, three hundred thirty-two thousand, nine hundred eighty-five".