85478733 has 20 divisors (see below), whose sum is σ = 128131740. Its totient is φ = 56788992.

The previous prime is 85478719. The next prime is 85478779. The reversal of 85478733 is 33787458.

It can be written as a sum of positive squares in 2 ways, for example, as 16621929 + 68856804 = 4077^2 + 8298^2 .

It is not a de Polignac number, because 85478733 - 2⁴ = 85478717 is a prime.

It is a super-2 number, since 2×85478733² = 14613227590570578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85478333) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24013 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (6406587).

Almost surely, 2^85478733 is an apocalyptic number.

It is an amenable number.

85478733 is a deficient number, since it is larger than the sum of its proper divisors (42653007).

85478733 is a wasteful number, since it uses less digits than its factorization.

85478733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3649 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 85478733 is about 9245.4709452791. The cubic root of 85478733 is about 440.5068762581.

The spelling of 85478733 in words is "eighty-five million, four hundred seventy-eight thousand, seven hundred thirty-three".