73866869 has 4 divisors (see below), whose sum is σ = 77078496. Its totient is φ = 70655244.

The previous prime is 73866847. The next prime is 73866901. The reversal of 73866869 is 96866837.

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 a de Polignac number, because none of the positive numbers 2^k-73866869 is a prime.

It is a super-2 number, since 2×73866869² = 10912628671726322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73866869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73866809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605779 + ... + 1605824.

It is an arithmetic number, because the mean of its divisors is an integer number (19269624).

Almost surely, 2^73866869 is an apocalyptic number.

It is an amenable number.

73866869 is a deficient number, since it is larger than the sum of its proper divisors (3211627).

73866869 is a wasteful number, since it uses less digits than its factorization.

73866869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211626.

The product of its digits is 2612736, while the sum is 53.

The square root of 73866869 is about 8594.5837013784. The cubic root of 73866869 is about 419.5817245478.

The spelling of 73866869 in words is "seventy-three million, eight hundred sixty-six thousand, eight hundred sixty-nine".