85478633 has 2 divisors, whose sum is σ = 85478634. Its totient is φ = 85478632.

The previous prime is 85478611. The next prime is 85478671. The reversal of 85478633 is 33687458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59182249 + 26296384 = 7693^2 + 5128^2 .

It is a cyclic number.

It is not a de Polignac number, because 85478633 - 2²⁴ = 68701417 is a prime.

It is not a weakly prime, because it can be changed into another prime (85478683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42739316 + 42739317.

It is an arithmetic number, because the mean of its divisors is an integer number (42739317).

Almost surely, 2^85478633 is an apocalyptic number.

It is an amenable number.

85478633 is a deficient number, since it is larger than the sum of its proper divisors (1).

85478633 is an equidigital number, since it uses as much as digits as its factorization.

85478633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 85478633 is about 9245.4655372242. The cubic root of 85478633 is about 440.5067044777.

The spelling of 85478633 in words is "eighty-five million, four hundred seventy-eight thousand, six hundred thirty-three".