961072621 has 2 divisors, whose sum is σ = 961072622. Its totient is φ = 961072620.

The previous prime is 961072603. The next prime is 961072631. The reversal of 961072621 is 126270169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810028521 + 151044100 = 28461^2 + 12290^2 .

It is a cyclic number.

It is not a de Polignac number, because 961072621 - 2¹¹ = 961070573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961072601) 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, 480536310 + 480536311.

It is an arithmetic number, because the mean of its divisors is an integer number (480536311).

Almost surely, 2^961072621 is an apocalyptic number.

It is an amenable number.

961072621 is a deficient number, since it is larger than the sum of its proper divisors (1).

961072621 is an equidigital number, since it uses as much as digits as its factorization.

961072621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 961072621 is about 31001.1712843241. The cubic root of 961072621 is about 986.8520972681.

The spelling of 961072621 in words is "nine hundred sixty-one million, seventy-two thousand, six hundred twenty-one".