85640546 has 8 divisors (see below), whose sum is σ = 134046144. Its totient is φ = 40958500.

The previous prime is 85640531. The next prime is 85640549. The reversal of 85640546 is 64504658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85640549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930830 + ... + 930921.

It is an arithmetic number, because the mean of its divisors is an integer number (16755768).

Almost surely, 2^85640546 is an apocalyptic number.

85640546 is a deficient number, since it is larger than the sum of its proper divisors (48405598).

85640546 is a wasteful number, since it uses less digits than its factorization.

85640546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861776.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 85640546 is about 9254.2177411167. The cubic root of 85640546 is about 440.7846639054.

The spelling of 85640546 in words is "eighty-five million, six hundred forty thousand, five hundred forty-six".