85564463 has 2 divisors, whose sum is σ = 85564464. Its totient is φ = 85564462.

The previous prime is 85564459. The next prime is 85564481. The reversal of 85564463 is 36446558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85564463 - 2² = 85564459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85564463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85564403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42782231 + 42782232.

It is an arithmetic number, because the mean of its divisors is an integer number (42782232).

Almost surely, 2^85564463 is an apocalyptic number.

85564463 is a deficient number, since it is larger than the sum of its proper divisors (1).

85564463 is an equidigital number, since it uses as much as digits as its factorization.

85564463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The square root of 85564463 is about 9250.1061074995. The cubic root of 85564463 is about 440.6540943047.

The spelling of 85564463 in words is "eighty-five million, five hundred sixty-four thousand, four hundred sixty-three".