85951645 has 8 divisors (see below), whose sum is σ = 111076056. Its totient is φ = 63471936.

The previous prime is 85951633. The next prime is 85951669. The reversal of 85951645 is 54615958.

It can be written as a sum of positive squares in 4 ways, for example, as 16112196 + 69839449 = 4014^2 + 8357^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85951645 - 2¹⁹ = 85427357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661102 + ... + 661231.

It is an arithmetic number, because the mean of its divisors is an integer number (13884507).

Almost surely, 2^85951645 is an apocalyptic number.

It is an amenable number.

85951645 is a deficient number, since it is larger than the sum of its proper divisors (25124411).

85951645 is a wasteful number, since it uses less digits than its factorization.

85951645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322351.

The product of its digits is 216000, while the sum is 43.

The square root of 85951645 is about 9271.0110020429. The cubic root of 85951645 is about 441.3177523583.

The spelling of 85951645 in words is "eighty-five million, nine hundred fifty-one thousand, six hundred forty-five".