616706640007 has 2 divisors, whose sum is σ = 616706640008. Its totient is φ = 616706640006.

The previous prime is 616706639981. The next prime is 616706640013. The reversal of 616706640007 is 700046607616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616706640007 - 2¹⁵ = 616706607239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616706646007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308353320003 + 308353320004.

It is an arithmetic number, because the mean of its divisors is an integer number (308353320004).

Almost surely, 2^616706640007 is an apocalyptic number.

616706640007 is a deficient number, since it is larger than the sum of its proper divisors (1).

616706640007 is an equidigital number, since it uses as much as digits as its factorization.

616706640007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 616706640007 in words is "six hundred sixteen billion, seven hundred six million, six hundred forty thousand, seven".