85713643 has 6 divisors (see below), whose sum is σ = 91052516. Its totient is φ = 80671392.

The previous prime is 85713637. The next prime is 85713653. The reversal of 85713643 is 34631758.

It is not a de Polignac number, because 85713643 - 2¹⁷ = 85582571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85713623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148005 + ... + 148582.

Almost surely, 2^85713643 is an apocalyptic number.

85713643 is a deficient number, since it is larger than the sum of its proper divisors (5338873).

85713643 is a wasteful number, since it uses less digits than its factorization.

85713643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296621 (or 296604 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 85713643 is about 9258.1662871219. The cubic root of 85713643 is about 440.9100362727.

The spelling of 85713643 in words is "eighty-five million, seven hundred thirteen thousand, six hundred forty-three".