6658435494 has 32 divisors (see below), whose sum is σ = 14801120640. Its totient is φ = 2218788936.

The previous prime is 6658435493. The next prime is 6658435513. The reversal of 6658435494 is 4945348566.

6658435494 is a `hidden beast` number, since 6 + 6 + 58 + 43 + 549 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6658435494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6658435493) by changing a digit.

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, 174157 + ... + 208919.

It is an arithmetic number, because the mean of its divisors is an integer number (462535020).

Almost surely, 2^6658435494 is an apocalyptic number.

6658435494 is an abundant number, since it is smaller than the sum of its proper divisors (8142685146).

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

6658435494 is a wasteful number, since it uses less digits than its factorization.

6658435494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38321 (or 38315 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The square root of 6658435494 is about 81599.2370920219. The cubic root of 6658435494 is about 1881.2971557530.

The spelling of 6658435494 in words is "six billion, six hundred fifty-eight million, four hundred thirty-five thousand, four hundred ninety-four".