74385689 has 8 divisors (see below), whose sum is σ = 86088960. Its totient is φ = 62951616.

The previous prime is 74385683. The next prime is 74385713. The reversal of 74385689 is 98658347.

74385689 = T₂₁₇ + T₂₁₈ + ... + T₇₆₉.

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

It is a de Polignac number, because none of the positive numbers 2^k-74385689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74385683) 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, 66704 + ... + 67809.

It is an arithmetic number, because the mean of its divisors is an integer number (10761120).

Almost surely, 2^74385689 is an apocalyptic number.

74385689 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

74385689 is a deficient number, since it is larger than the sum of its proper divisors (11703271).

74385689 is a wasteful number, since it uses less digits than its factorization.

74385689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134599.

The product of its digits is 1451520, while the sum is 50.

The square root of 74385689 is about 8624.7138503257. The cubic root of 74385689 is about 420.5617747133.

The spelling of 74385689 in words is "seventy-four million, three hundred eighty-five thousand, six hundred eighty-nine".