85621507 has 8 divisors (see below), whose sum is σ = 86918832. Its totient is φ = 84333600.

The previous prime is 85621499. The next prime is 85621517. The reversal of 85621507 is 70512658.

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 85621507 - 2³ = 85621499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85621517) 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, 17157 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (10864854).

Almost surely, 2^85621507 is an apocalyptic number.

85621507 is a deficient number, since it is larger than the sum of its proper divisors (1297325).

85621507 is a wasteful number, since it uses less digits than its factorization.

85621507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 85621507 is about 9253.1890178468. The cubic root of 85621507 is about 440.7519974424.

The spelling of 85621507 in words is "eighty-five million, six hundred twenty-one thousand, five hundred seven".