73961986 has 8 divisors (see below), whose sum is σ = 126792000. Its totient is φ = 31697988.

The previous prime is 73961983. The next prime is 73961989. The reversal of 73961986 is 68916937.

It is an interprime number because it is at equal distance from previous prime (73961983) and next prime (73961989).

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

It is not an unprimeable number, because it can be changed into a prime (73961981) 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, 2641486 + ... + 2641513.

It is an arithmetic number, because the mean of its divisors is an integer number (15849000).

Almost surely, 2^73961986 is an apocalyptic number.

73961986 is a deficient number, since it is larger than the sum of its proper divisors (52830014).

73961986 is a wasteful number, since it uses less digits than its factorization.

73961986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283008.

The product of its digits is 489888, while the sum is 49.

The square root of 73961986 is about 8600.1154643412. The cubic root of 73961986 is about 419.7617431745.

It can be divided in two parts, 73961 and 986, that added together give a palindrome (74947).

The spelling of 73961986 in words is "seventy-three million, nine hundred sixty-one thousand, nine hundred eighty-six".