74283985 has 8 divisors (see below), whose sum is σ = 90023976. Its totient is φ = 58838400.

The previous prime is 74283983. The next prime is 74283991. The reversal of 74283985 is 58938247.

It can be written as a sum of positive squares in 4 ways, for example, as 45037521 + 29246464 = 6711^2 + 5408^2 .

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

It is not a de Polignac number, because 74283985 - 2¹ = 74283983 is a prime.

It is a super-2 number, since 2×74283985² = 11036220854960450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74283983) 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, 73044 + ... + 74053.

It is an arithmetic number, because the mean of its divisors is an integer number (11252997).

Almost surely, 2^74283985 is an apocalyptic number.

It is an amenable number.

74283985 is a deficient number, since it is larger than the sum of its proper divisors (15739991).

74283985 is a wasteful number, since it uses less digits than its factorization.

74283985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147203.

The product of its digits is 483840, while the sum is 46.

The square root of 74283985 is about 8618.8157539189. The cubic root of 74283985 is about 420.3700159495.

The spelling of 74283985 in words is "seventy-four million, two hundred eighty-three thousand, nine hundred eighty-five".