85995977 has 2 divisors, whose sum is σ = 85995978. Its totient is φ = 85995976.

The previous prime is 85995967. The next prime is 85996067. The reversal of 85995977 is 77959958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 4923961 = 9004^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 85995977 - 2⁴ = 85995961 is a prime.

It is not a weakly prime, because it can be changed into another prime (85995967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42997988 + 42997989.

It is an arithmetic number, because the mean of its divisors is an integer number (42997989).

Almost surely, 2^85995977 is an apocalyptic number.

It is an amenable number.

85995977 is a deficient number, since it is larger than the sum of its proper divisors (1).

85995977 is an equidigital number, since it uses as much as digits as its factorization.

85995977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 59.

The square root of 85995977 is about 9273.4015873357. The cubic root of 85995977 is about 441.3936133687.

The spelling of 85995977 in words is "eighty-five million, nine hundred ninety-five thousand, nine hundred seventy-seven".