6556607645 has 8 divisors (see below), whose sum is σ = 8991919104. Its totient is φ = 4495959504.

The previous prime is 6556607627. The next prime is 6556607653. The reversal of 6556607645 is 5467066556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6556607645 - 2⁸ = 6556607389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6556607593 and 6556607602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93665789 + ... + 93665858.

It is an arithmetic number, because the mean of its divisors is an integer number (1123989888).

Almost surely, 2^6556607645 is an apocalyptic number.

It is an amenable number.

6556607645 is a deficient number, since it is larger than the sum of its proper divisors (2435311459).

6556607645 is a wasteful number, since it uses less digits than its factorization.

6556607645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187331659.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The square root of 6556607645 is about 80972.8821581645. The cubic root of 6556607645 is about 1871.6575849541.

The spelling of 6556607645 in words is "six billion, five hundred fifty-six million, six hundred seven thousand, six hundred forty-five".