73641573 has 12 divisors (see below), whose sum is σ = 107366688. Its totient is φ = 48634920.

The previous prime is 73641571. The next prime is 73641583. The reversal of 73641573 is 37514637.

73641573 is a `hidden beast` number, since 7 + 3 + 641 + 5 + 7 + 3 = 666.

It is not a de Polignac number, because 73641573 - 2¹ = 73641571 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73641571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37273 + ... + 39198.

It is an arithmetic number, because the mean of its divisors is an integer number (8947224).

Almost surely, 2^73641573 is an apocalyptic number.

It is an amenable number.

73641573 is a deficient number, since it is larger than the sum of its proper divisors (33725115).

73641573 is a wasteful number, since it uses less digits than its factorization.

73641573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76584 (or 76581 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 73641573 is about 8581.4668326575. The cubic root of 73641573 is about 419.1547114853.

The spelling of 73641573 in words is "seventy-three million, six hundred forty-one thousand, five hundred seventy-three".