802664977 has 2 divisors, whose sum is σ = 802664978. Its totient is φ = 802664976.

The previous prime is 802664957. The next prime is 802664999. The reversal of 802664977 is 779466208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556771216 + 245893761 = 23596^2 + 15681^2 .

It is a cyclic number.

It is not a de Polignac number, because 802664977 - 2¹¹ = 802662929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 802664977.

It is not a weakly prime, because it can be changed into another prime (802664917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401332488 + 401332489.

It is an arithmetic number, because the mean of its divisors is an integer number (401332489).

Almost surely, 2^802664977 is an apocalyptic number.

It is an amenable number.

802664977 is a deficient number, since it is larger than the sum of its proper divisors (1).

802664977 is an equidigital number, since it uses as much as digits as its factorization.

802664977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 802664977 is about 28331.3426614412. The cubic root of 802664977 is about 929.3474348405.

The spelling of 802664977 in words is "eight hundred two million, six hundred sixty-four thousand, nine hundred seventy-seven".