74666989 has 8 divisors (see below), whose sum is σ = 76284800. Its totient is φ = 73062000.

The previous prime is 74666951. The next prime is 74667041. The reversal of 74666989 is 98966647.

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

It is a cyclic number.

It is not a de Polignac number, because 74666989 - 2²¹ = 72569837 is a prime.

It is a super-2 number, since 2×74666989² = 11150318492652242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74666089) 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, 9064 + ... + 15214.

It is an arithmetic number, because the mean of its divisors is an integer number (9535600).

Almost surely, 2^74666989 is an apocalyptic number.

It is an amenable number.

74666989 is a deficient number, since it is larger than the sum of its proper divisors (1617811).

74666989 is a wasteful number, since it uses less digits than its factorization.

74666989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411.

The product of its digits is 3919104, while the sum is 55.

The square root of 74666989 is about 8641.0062492744. The cubic root of 74666989 is about 421.0912457873.

The spelling of 74666989 in words is "seventy-four million, six hundred sixty-six thousand, nine hundred eighty-nine".