74000819 has 4 divisors (see below), whose sum is σ = 74220744. Its totient is φ = 73780896.

The previous prime is 74000791. The next prime is 74000917. The reversal of 74000819 is 91800047.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74000819 - 2¹⁶ = 73935283 is a prime.

It is a super-2 number, since 2×74000819² = 10952242425341522, which contains 22 as substring.

It is a Duffinian number.

74000819 is a modest number, since divided by 819 gives 74 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 74000791 and 74000800.

It is not an unprimeable number, because it can be changed into a prime (74000519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109457 + ... + 110130.

It is an arithmetic number, because the mean of its divisors is an integer number (18555186).

Almost surely, 2^74000819 is an apocalyptic number.

74000819 is a deficient number, since it is larger than the sum of its proper divisors (219925).

74000819 is a wasteful number, since it uses less digits than its factorization.

74000819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219924.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 74000819 is about 8602.3728703190. The cubic root of 74000819 is about 419.8351942209.

The spelling of 74000819 in words is "seventy-four million, eight hundred nineteen", and thus it is an aban number.