73988647 has 2 divisors, whose sum is σ = 73988648. Its totient is φ = 73988646.

The previous prime is 73988633. The next prime is 73988699. The reversal of 73988647 is 74688937.

It is a happy number.

It is an a-pointer prime, because the next prime (73988699) can be obtained adding 73988647 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73988647 - 2¹¹ = 73986599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73988594 and 73988603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73988617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36994323 + 36994324.

It is an arithmetic number, because the mean of its divisors is an integer number (36994324).

Almost surely, 2^73988647 is an apocalyptic number.

73988647 is a deficient number, since it is larger than the sum of its proper divisors (1).

73988647 is an equidigital number, since it uses as much as digits as its factorization.

73988647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 73988647 is about 8601.6653620098. The cubic root of 73988647 is about 419.8121741414.

The spelling of 73988647 in words is "seventy-three million, nine hundred eighty-eight thousand, six hundred forty-seven".