85638470 has 16 divisors (see below), whose sum is σ = 155882880. Its totient is φ = 33870144.

The previous prime is 85638457. The next prime is 85638473. The reversal of 85638470 is 7483658.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85638473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47222 + ... + 49001.

It is an arithmetic number, because the mean of its divisors is an integer number (9742680).

Almost surely, 2^85638470 is an apocalyptic number.

85638470 is a deficient number, since it is larger than the sum of its proper divisors (70244410).

85638470 is a wasteful number, since it uses less digits than its factorization.

85638470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96319.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 85638470 is about 9254.1055753649. The cubic root of 85638470 is about 440.7811022110.

The spelling of 85638470 in words is "eighty-five million, six hundred thirty-eight thousand, four hundred seventy".