577164661 has 2 divisors, whose sum is σ = 577164662. Its totient is φ = 577164660.

The previous prime is 577164649. The next prime is 577164673. The reversal of 577164661 is 166461775.

It is a balanced prime because it is at equal distance from previous prime (577164649) and next prime (577164673).

It can be written as a sum of positive squares in only one way, i.e., 314530225 + 262634436 = 17735^2 + 16206^2 .

It is a cyclic number.

It is not a de Polignac number, because 577164661 - 2¹¹ = 577162613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (577164611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288582330 + 288582331.

It is an arithmetic number, because the mean of its divisors is an integer number (288582331).

Almost surely, 2^577164661 is an apocalyptic number.

It is an amenable number.

577164661 is a deficient number, since it is larger than the sum of its proper divisors (1).

577164661 is an equidigital number, since it uses as much as digits as its factorization.

577164661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 577164661 is about 24024.2515179974. The cubic root of 577164661 is about 832.5939369812.

The spelling of 577164661 in words is "five hundred seventy-seven million, one hundred sixty-four thousand, six hundred sixty-one".