73897619 has 2 divisors, whose sum is σ = 73897620. Its totient is φ = 73897618.

The previous prime is 73897601. The next prime is 73897633. The reversal of 73897619 is 91679837.

It is a strong prime.

It is an emirp because it is prime and its reverse (91679837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73897619 - 2²⁰ = 72849043 is a prime.

It is a super-2 number, since 2×73897619² = 10921716187738322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (73897699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36948809 + 36948810.

It is an arithmetic number, because the mean of its divisors is an integer number (36948810).

Almost surely, 2^73897619 is an apocalyptic number.

73897619 is a deficient number, since it is larger than the sum of its proper divisors (1).

73897619 is an equidigital number, since it uses as much as digits as its factorization.

73897619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 73897619 is about 8596.3724326020. The cubic root of 73897619 is about 419.6399389556.

The spelling of 73897619 in words is "seventy-three million, eight hundred ninety-seven thousand, six hundred nineteen".