73622181 has 8 divisors (see below), whose sum is σ = 99772384. Its totient is φ = 48276720.

The previous prime is 73622177. The next prime is 73622201. The reversal of 73622181 is 18122637.

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

It is not a de Polignac number, because 73622181 - 2² = 73622177 is a prime.

It is a super-2 number, since 2×73622181² = 10840451070393522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73622581) 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, 200971 + ... + 201336.

It is an arithmetic number, because the mean of its divisors is an integer number (12471548).

Almost surely, 2^73622181 is an apocalyptic number.

It is an amenable number.

73622181 is a deficient number, since it is larger than the sum of its proper divisors (26150203).

73622181 is a wasteful number, since it uses less digits than its factorization.

73622181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402371.

The product of its digits is 4032, while the sum is 30.

The square root of 73622181 is about 8580.3368814983. The cubic root of 73622181 is about 419.1179163191.

The spelling of 73622181 in words is "seventy-three million, six hundred twenty-two thousand, one hundred eighty-one".