85758621 has 16 divisors (see below), whose sum is σ = 123514944. Its totient is φ = 52614144.

The previous prime is 85758613. The next prime is 85758623. The reversal of 85758621 is 12685758.

It is not a de Polignac number, because 85758621 - 2³ = 85758613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85758623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10365 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (7719684).

Almost surely, 2^85758621 is an apocalyptic number.

It is an amenable number.

85758621 is a deficient number, since it is larger than the sum of its proper divisors (37756323).

85758621 is a wasteful number, since it uses less digits than its factorization.

85758621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700.

The product of its digits is 134400, while the sum is 42.

The square root of 85758621 is about 9260.5950672729. The cubic root of 85758621 is about 440.9871448991.

The spelling of 85758621 in words is "eighty-five million, seven hundred fifty-eight thousand, six hundred twenty-one".