611664827 has 2 divisors, whose sum is σ = 611664828. Its totient is φ = 611664826.

The previous prime is 611664793. The next prime is 611664857. The reversal of 611664827 is 728466116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611664827 - 2⁶ = 611664763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611664857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305832413 + 305832414.

It is an arithmetic number, because the mean of its divisors is an integer number (305832414).

Almost surely, 2^611664827 is an apocalyptic number.

611664827 is a deficient number, since it is larger than the sum of its proper divisors (1).

611664827 is an equidigital number, since it uses as much as digits as its factorization.

611664827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 611664827 is about 24731.8585431827. The cubic root of 611664827 is about 848.8634530721.

The spelling of 611664827 in words is "six hundred eleven million, six hundred sixty-four thousand, eight hundred twenty-seven".