73638081 has 12 divisors (see below), whose sum is σ = 116035920. Its totient is φ = 44629080.

The previous prime is 73638079. The next prime is 73638083. The reversal of 73638081 is 18083637.

It is an interprime number because it is at equal distance from previous prime (73638079) and next prime (73638083).

It is not a de Polignac number, because 73638081 - 2¹ = 73638079 is a prime.

It is a super-2 number, since 2×73638081² = 10845133946725122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73638083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371811 + ... + 372008.

It is an arithmetic number, because the mean of its divisors is an integer number (9669660).

Almost surely, 2^73638081 is an apocalyptic number.

It is an amenable number.

73638081 is a deficient number, since it is larger than the sum of its proper divisors (42397839).

73638081 is a wasteful number, since it uses less digits than its factorization.

73638081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743836 (or 743833 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 73638081 is about 8581.2633685256. The cubic root of 73638081 is about 419.1480860999.

The spelling of 73638081 in words is "seventy-three million, six hundred thirty-eight thousand, eighty-one".