73655869 has 6 divisors (see below), whose sum is σ = 85681374. Its totient is φ = 63133560.

The previous prime is 73655843. The next prime is 73655873. The reversal of 73655869 is 96855637.

It can be written as a sum of positive squares in only one way, i.e., 45724644 + 27931225 = 6762^2 + 5285^2 .

It is not a de Polignac number, because 73655869 - 2⁷ = 73655741 is a prime.

It is a super-2 number, since 2×73655869² = 10850374076290322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1503181 = 73655869 / (7 + 3 + 6 + 5 + 5 + 8 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73655839) 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, 751542 + ... + 751639.

It is an arithmetic number, because the mean of its divisors is an integer number (14280229).

Almost surely, 2^73655869 is an apocalyptic number.

It is an amenable number.

73655869 is a deficient number, since it is larger than the sum of its proper divisors (12025505).

73655869 is a wasteful number, since it uses less digits than its factorization.

73655869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503195 (or 1503188 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 49.

The square root of 73655869 is about 8582.2997500670. The cubic root of 73655869 is about 419.1818331585.

The spelling of 73655869 in words is "seventy-three million, six hundred fifty-five thousand, eight hundred sixty-nine".