85699621 has 8 divisors (see below), whose sum is σ = 98017344. Its totient is φ = 73400640.

The previous prime is 85699583. The next prime is 85699643. The reversal of 85699621 is 12699658.

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 85699621 - 2⁹ = 85699109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85699681) 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 7 ways as a sum of consecutive naturals, for example, 7101 + ... + 14893.

It is an arithmetic number, because the mean of its divisors is an integer number (12252168).

Almost surely, 2^85699621 is an apocalyptic number.

It is an amenable number.

85699621 is a deficient number, since it is larger than the sum of its proper divisors (12317723).

85699621 is a wasteful number, since it uses less digits than its factorization.

85699621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371.

The product of its digits is 233280, while the sum is 46.

The square root of 85699621 is about 9257.4089787586. The cubic root of 85699621 is about 440.8859919570.

It can be divided in two parts, 85699 and 621, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 85699621 in words is "eighty-five million, six hundred ninety-nine thousand, six hundred twenty-one".