73640853 has 32 divisors (see below), whose sum is σ = 128177280. Its totient is φ = 41195520.

The previous prime is 73640851. The next prime is 73640873. The reversal of 73640853 is 35804637.

It is a happy number.

73640853 is a `hidden beast` number, since 7 + 3 + 640 + 8 + 5 + 3 = 666.

It is not a de Polignac number, because 73640853 - 2¹ = 73640851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73640851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5676 + ... + 13397.

It is an arithmetic number, because the mean of its divisors is an integer number (4005540).

Almost surely, 2^73640853 is an apocalyptic number.

It is an amenable number.

73640853 is a deficient number, since it is larger than the sum of its proper divisors (54536427).

73640853 is a wasteful number, since it uses less digits than its factorization.

73640853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106 (or 19100 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 73640853 is about 8581.4248816849. The cubic root of 73640853 is about 419.1533454436.

The spelling of 73640853 in words is "seventy-three million, six hundred forty thousand, eight hundred fifty-three".