85745990 has 32 divisors (see below), whose sum is σ = 170760960. Its totient is φ = 30738400.

The previous prime is 85745981. The next prime is 85746007. The reversal of 85745990 is 9954758.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2321 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (5336280).

Almost surely, 2^85745990 is an apocalyptic number.

85745990 is a deficient number, since it is larger than the sum of its proper divisors (85014970).

85745990 is a wasteful number, since it uses less digits than its factorization.

85745990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11068.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 85745990 is about 9259.9130665466. The cubic root of 85745990 is about 440.9654935011.

The spelling of 85745990 in words is "eighty-five million, seven hundred forty-five thousand, nine hundred ninety".