73145769 has 4 divisors (see below), whose sum is σ = 97527696. Its totient is φ = 48763844.

The previous prime is 73145767. The next prime is 73145783. The reversal of 73145769 is 96754137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73145769 - 2¹ = 73145767 is a prime.

It is a super-2 number, since 2×73145769² = 10700607045202722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73145769.

It is not an unprimeable number, because it can be changed into a prime (73145767) 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, 12190959 + ... + 12190964.

It is an arithmetic number, because the mean of its divisors is an integer number (24381924).

Almost surely, 2^73145769 is an apocalyptic number.

It is an amenable number.

73145769 is a deficient number, since it is larger than the sum of its proper divisors (24381927).

73145769 is a wasteful number, since it uses less digits than its factorization.

73145769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24381926.

The product of its digits is 158760, while the sum is 42.

The square root of 73145769 is about 8552.5299765625. The cubic root of 73145769 is about 418.2119164608.

The spelling of 73145769 in words is "seventy-three million, one hundred forty-five thousand, seven hundred sixty-nine".