73641011 has 4 divisors (see below), whose sum is σ = 73881192. Its totient is φ = 73400832.

The previous prime is 73640999. The next prime is 73641023. The reversal of 73641011 is 11014637.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (73640999) and next prime (73641023).

It is a cyclic number.

It is not a de Polignac number, because 73641011 - 2¹⁰ = 73639987 is a prime.

It is a super-2 number, since 2×73641011² = 10845997002204242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73641031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119630 + ... + 120243.

It is an arithmetic number, because the mean of its divisors is an integer number (18470298).

Almost surely, 2^73641011 is an apocalyptic number.

73641011 is a deficient number, since it is larger than the sum of its proper divisors (240181).

73641011 is a wasteful number, since it uses less digits than its factorization.

73641011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240180.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 73641011 is about 8581.4340876103. The cubic root of 73641011 is about 419.1536452146.

Adding to 73641011 its reverse (11014637), we get a palindrome (84655648).

The spelling of 73641011 in words is "seventy-three million, six hundred forty-one thousand, eleven".