611664793 has 2 divisors, whose sum is σ = 611664794. Its totient is φ = 611664792.

The previous prime is 611664769. The next prime is 611664827. The reversal of 611664793 is 397466116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310746384 + 300918409 = 17628^2 + 17347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611664793 is a prime.

It is not a weakly prime, because it can be changed into another prime (611664733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305832396 + 305832397.

It is an arithmetic number, because the mean of its divisors is an integer number (305832397).

Almost surely, 2^611664793 is an apocalyptic number.

It is an amenable number.

611664793 is a deficient number, since it is larger than the sum of its proper divisors (1).

611664793 is an equidigital number, since it uses as much as digits as its factorization.

611664793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 611664793 is about 24731.8578558102. The cubic root of 611664793 is about 848.8634373438.

The spelling of 611664793 in words is "six hundred eleven million, six hundred sixty-four thousand, seven hundred ninety-three".