85147808 has 12 divisors (see below), whose sum is σ = 167634810. Its totient is φ = 42573888.

The previous prime is 85147801. The next prime is 85147823. The reversal of 85147808 is 80874158.

It can be written as a sum of positive squares in only one way, i.e., 45859984 + 39287824 = 6772^2 + 6268^2 .

It is not an unprimeable number, because it can be changed into a prime (85147801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330403 + ... + 1330466.

Almost surely, 2^85147808 is an apocalyptic number.

It is an amenable number.

85147808 is a deficient number, since it is larger than the sum of its proper divisors (82487002).

85147808 is a wasteful number, since it uses less digits than its factorization.

85147808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660879 (or 2660871 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 85147808 is about 9227.5569897996. The cubic root of 85147808 is about 439.9376771232.

The spelling of 85147808 in words is "eighty-five million, one hundred forty-seven thousand, eight hundred eight".