73687889 has 4 divisors (see below), whose sum is σ = 80386800. Its totient is φ = 66988980.

The previous prime is 73687841. The next prime is 73687903. The reversal of 73687889 is 98878637.

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 73687889 - 2⁸ = 73687633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73687819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3349439 + ... + 3349460.

It is an arithmetic number, because the mean of its divisors is an integer number (20096700).

Almost surely, 2^73687889 is an apocalyptic number.

It is an amenable number.

73687889 is a deficient number, since it is larger than the sum of its proper divisors (6698911).

73687889 is a wasteful number, since it uses less digits than its factorization.

73687889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698910.

The product of its digits is 4064256, while the sum is 56.

The square root of 73687889 is about 8584.1650147233. The cubic root of 73687889 is about 419.2425672089.

The spelling of 73687889 in words is "seventy-three million, six hundred eighty-seven thousand, eight hundred eighty-nine".