85720963 has 2 divisors, whose sum is σ = 85720964. Its totient is φ = 85720962.

The previous prime is 85720891. The next prime is 85720967. The reversal of 85720963 is 36902758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85720963 - 2¹³ = 85712771 is a prime.

It is not a weakly prime, because it can be changed into another prime (85720967) 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, 42860481 + 42860482.

It is an arithmetic number, because the mean of its divisors is an integer number (42860482).

Almost surely, 2^85720963 is an apocalyptic number.

85720963 is a deficient number, since it is larger than the sum of its proper divisors (1).

85720963 is an equidigital number, since it uses as much as digits as its factorization.

85720963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 85720963 is about 9258.5616053467. The cubic root of 85720963 is about 440.9225872486.

The spelling of 85720963 in words is "eighty-five million, seven hundred twenty thousand, nine hundred sixty-three".