85674520 has 16 divisors (see below), whose sum is σ = 192767760. Its totient is φ = 34269792.

The previous prime is 85674503. The next prime is 85674521. The reversal of 85674520 is 2547658.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85674520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85674521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070892 + ... + 1070971.

It is an arithmetic number, because the mean of its divisors is an integer number (12047985).

Almost surely, 2^85674520 is an apocalyptic number.

It is an amenable number.

85674520 is an abundant number, since it is smaller than the sum of its proper divisors (107093240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85674520 is a wasteful number, since it uses less digits than its factorization.

85674520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141874 (or 2141870 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 85674520 is about 9256.0531545578. The cubic root of 85674520 is about 440.8429433033.

The spelling of 85674520 in words is "eighty-five million, six hundred seventy-four thousand, five hundred twenty".