6658070409 has 27 divisors (see below), whose sum is σ = 9804246439. Its totient is φ = 4354015920.

The previous prime is 6658070387. The next prime is 6658070423. The reversal of 6658070409 is 9040708566.

The square root of 6658070409 is 81597.

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

6658070409 is a `hidden beast` number, since 66 + 580 + 7 + 0 + 4 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2134162809 + 4523907600 = 46197^2 + 67260^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6658070409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6658070449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14442439 + ... + 14442899.

Almost surely, 2^6658070409 is an apocalyptic number.

6658070409 is the 81597-th square number.

6658070409 is the 40799-th centered octagonal number.

It is an amenable number.

6658070409 is a deficient number, since it is larger than the sum of its proper divisors (3146176030).

6658070409 is an frugal number, since it uses more digits than its factorization.

6658070409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The cubic root of 6658070409 is about 1881.2627710027.

The spelling of 6658070409 in words is "six billion, six hundred fifty-eight million, seventy thousand, four hundred nine".