966772621 has 2 divisors, whose sum is σ = 966772622. Its totient is φ = 966772620.

The previous prime is 966772607. The next prime is 966772637. The reversal of 966772621 is 126277669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887384521 + 79388100 = 29789^2 + 8910^2 .

It is a cyclic number.

It is not a de Polignac number, because 966772621 - 2⁵ = 966772589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966772021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483386310 + 483386311.

It is an arithmetic number, because the mean of its divisors is an integer number (483386311).

Almost surely, 2^966772621 is an apocalyptic number.

It is an amenable number.

966772621 is a deficient number, since it is larger than the sum of its proper divisors (1).

966772621 is an equidigital number, since it uses as much as digits as its factorization.

966772621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 966772621 is about 31092.9673881410. The cubic root of 966772621 is about 988.7992178875.

The spelling of 966772621 in words is "nine hundred sixty-six million, seven hundred seventy-two thousand, six hundred twenty-one".