73988361 has 6 divisors (see below), whose sum is σ = 106872090. Its totient is φ = 49325568.

The previous prime is 73988359. The next prime is 73988363. The reversal of 73988361 is 16388937.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73988359) and next prime (73988363).

It can be written as a sum of positive squares in only one way, i.e., 73205136 + 783225 = 8556^2 + 885^2 .

It is not a de Polignac number, because 73988361 - 2¹ = 73988359 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73988363) 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, 4110456 + ... + 4110473.

It is an arithmetic number, because the mean of its divisors is an integer number (17812015).

Almost surely, 2^73988361 is an apocalyptic number.

It is an amenable number.

73988361 is a deficient number, since it is larger than the sum of its proper divisors (32883729).

73988361 is a wasteful number, since it uses less digits than its factorization.

73988361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220935 (or 8220932 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 73988361 is about 8601.6487373061. The cubic root of 73988361 is about 419.8116332186.

The spelling of 73988361 in words is "seventy-three million, nine hundred eighty-eight thousand, three hundred sixty-one".