73811969 has 16 divisors (see below), whose sum is σ = 92244096. Its totient is φ = 57379200.

The previous prime is 73811893. The next prime is 73811993. The reversal of 73811969 is 96911837.

It is a cyclic number.

It is not a de Polignac number, because 73811969 - 2¹² = 73807873 is a prime.

It is a super-2 number, since 2×73811969² = 10896413535313922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73811869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42029 + ... + 43749.

It is an arithmetic number, because the mean of its divisors is an integer number (5765256).

Almost surely, 2^73811969 is an apocalyptic number.

It is an amenable number.

73811969 is a deficient number, since it is larger than the sum of its proper divisors (18432127).

73811969 is a wasteful number, since it uses less digits than its factorization.

73811969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its digits is 81648, while the sum is 44.

The square root of 73811969 is about 8591.3892357406. The cubic root of 73811969 is about 419.4777503479.

The spelling of 73811969 in words is "seventy-three million, eight hundred eleven thousand, nine hundred sixty-nine".