73726641 has 6 divisors (see below), whose sum is σ = 106494050. Its totient is φ = 49151088.

The previous prime is 73726591. The next prime is 73726663. The reversal of 73726641 is 14662737.

73726641 is a `hidden beast` number, since 7 + 3 + 7 + 2 + 6 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57153600 + 16573041 = 7560^2 + 4071^2 .

It is not a de Polignac number, because 73726641 - 2²¹ = 71629489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73726596 and 73726605.

It is not an unprimeable number, because it can be changed into a prime (73726141) 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, 4095916 + ... + 4095933.

Almost surely, 2^73726641 is an apocalyptic number.

It is an amenable number.

73726641 is a deficient number, since it is larger than the sum of its proper divisors (32767409).

73726641 is a wasteful number, since it uses less digits than its factorization.

73726641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191855 (or 8191852 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 73726641 is about 8586.4218973913. The cubic root of 73726641 is about 419.3160466777.

The spelling of 73726641 in words is "seventy-three million, seven hundred twenty-six thousand, six hundred forty-one".