85744636 has 12 divisors (see below), whose sum is σ = 154893760. Its totient is φ = 41489280.

The previous prime is 85744573. The next prime is 85744639. The reversal of 85744636 is 63644758.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 85744592 and 85744601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85744639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345621 + ... + 345868.

Almost surely, 2^85744636 is an apocalyptic number.

It is an amenable number.

85744636 is a deficient number, since it is larger than the sum of its proper divisors (69149124).

85744636 is a wasteful number, since it uses less digits than its factorization.

85744636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691524 (or 691522 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 85744636 is about 9259.8399554204. The cubic root of 85744636 is about 440.9631724191.

The spelling of 85744636 in words is "eighty-five million, seven hundred forty-four thousand, six hundred thirty-six".