6908427561 has 32 divisors (see below), whose sum is σ = 10667704320. Its totient is φ = 3895081344.

The previous prime is 6908427557. The next prime is 6908427577. The reversal of 6908427561 is 1657248096.

It is not a de Polignac number, because 6908427561 - 2² = 6908427557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6908427561.

It is not an unprimeable number, because it can be changed into a prime (6908427961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1659000 + ... + 1663158.

It is an arithmetic number, because the mean of its divisors is an integer number (333365760).

Almost surely, 2^6908427561 is an apocalyptic number.

It is an amenable number.

6908427561 is a deficient number, since it is larger than the sum of its proper divisors (3759276759).

6908427561 is a wasteful number, since it uses less digits than its factorization.

6908427561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 6908427561 is about 83116.9511050544. The cubic root of 6908427561 is about 1904.5530291037.

The spelling of 6908427561 in words is "six billion, nine hundred eight million, four hundred twenty-seven thousand, five hundred sixty-one".