73663960 has 16 divisors (see below), whose sum is σ = 165744000. Its totient is φ = 29465568.

The previous prime is 73663951. The next prime is 73663979. The reversal of 73663960 is 6936637.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1841599 = 73663960 / (7 + 3 + 6 + 6 + 3 + 9 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920760 + ... + 920839.

It is an arithmetic number, because the mean of its divisors is an integer number (10359000).

Almost surely, 2^73663960 is an apocalyptic number.

It is an amenable number.

73663960 is an abundant number, since it is smaller than the sum of its proper divisors (92080040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73663960 is a wasteful number, since it uses less digits than its factorization.

73663960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841610 (or 1841606 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 73663960 is about 8582.7711142731. The cubic root of 73663960 is about 419.1971814536.

The spelling of 73663960 in words is "seventy-three million, six hundred sixty-three thousand, nine hundred sixty".