73648431 has 6 divisors (see below), whose sum is σ = 106381080. Its totient is φ = 49098948.

The previous prime is 73648397. The next prime is 73648433. The reversal of 73648431 is 13484637.

73648431 is a `hidden beast` number, since 7 + 3 + 648 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 73648431 - 2¹⁰ = 73647407 is a prime.

It is a super-2 number, since 2×73648431² = 10848182777523522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73648433) 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, 4091571 + ... + 4091588.

It is an arithmetic number, because the mean of its divisors is an integer number (17730180).

Almost surely, 2^73648431 is an apocalyptic number.

73648431 is a deficient number, since it is larger than the sum of its proper divisors (32732649).

73648431 is a wasteful number, since it uses less digits than its factorization.

73648431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8183165 (or 8183162 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 73648431 is about 8581.8664053922. The cubic root of 73648431 is about 419.1677225860.

The spelling of 73648431 in words is "seventy-three million, six hundred forty-eight thousand, four hundred thirty-one".