6656493307 has 4 divisors (see below), whose sum is σ = 7006835080. Its totient is φ = 6306151536.

The previous prime is 6656493281. The next prime is 6656493313. The reversal of 6656493307 is 7033946566.

6656493307 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6656493307 - 2¹⁵ = 6656460539 is a prime.

It is a super-2 number, since 2×6656493307² = 88617806292271592498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6656493407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175170858 + ... + 175170895.

It is an arithmetic number, because the mean of its divisors is an integer number (1751708770).

Almost surely, 2^6656493307 is an apocalyptic number.

6656493307 is a deficient number, since it is larger than the sum of its proper divisors (350341773).

6656493307 is a wasteful number, since it uses less digits than its factorization.

6656493307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350341772.

The product of its (nonzero) digits is 2449440, while the sum is 49.

The square root of 6656493307 is about 81587.3354571652. The cubic root of 6656493307 is about 1881.1142205775.

The spelling of 6656493307 in words is "six billion, six hundred fifty-six million, four hundred ninety-three thousand, three hundred seven".