73813987 has 8 divisors (see below), whose sum is σ = 79618896. Its totient is φ = 68027232.

The previous prime is 73813979. The next prime is 73813997. The reversal of 73813987 is 78931837.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73813987 - 2³ = 73813979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73813997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4608 + ... + 12994.

It is an arithmetic number, because the mean of its divisors is an integer number (9952362).

Almost surely, 2^73813987 is an apocalyptic number.

73813987 is a deficient number, since it is larger than the sum of its proper divisors (5804909).

73813987 is a wasteful number, since it uses less digits than its factorization.

73813987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077.

The product of its digits is 254016, while the sum is 46.

The square root of 73813987 is about 8591.5066781095. The cubic root of 73813987 is about 419.4815731172.

The spelling of 73813987 in words is "seventy-three million, eight hundred thirteen thousand, nine hundred eighty-seven".