84625811 has 2 divisors, whose sum is σ = 84625812. Its totient is φ = 84625810.

The previous prime is 84625769. The next prime is 84625817. The reversal of 84625811 is 11852648.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84625811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (84625817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42312905 + 42312906.

It is an arithmetic number, because the mean of its divisors is an integer number (42312906).

Almost surely, 2^84625811 is an apocalyptic number.

84625811 is a deficient number, since it is larger than the sum of its proper divisors (1).

84625811 is an equidigital number, since it uses as much as digits as its factorization.

84625811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 35.

The square root of 84625811 is about 9199.2288263745. The cubic root of 84625811 is about 439.0368238959.

The spelling of 84625811 in words is "eighty-four million, six hundred twenty-five thousand, eight hundred eleven".