74647489 has 8 divisors (see below), whose sum is σ = 89020800. Its totient is φ = 61201536.

The previous prime is 74647481. The next prime is 74647541. The reversal of 74647489 is 98474647.

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 74647489 - 2³ = 74647481 is a prime.

It is a super-2 number, since 2×74647489² = 11144495228010242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74647481) 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, 231664 + ... + 231985.

It is an arithmetic number, because the mean of its divisors is an integer number (11127600).

Almost surely, 2^74647489 is an apocalyptic number.

It is an amenable number.

74647489 is a deficient number, since it is larger than the sum of its proper divisors (14373311).

74647489 is a wasteful number, since it uses less digits than its factorization.

74647489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463679.

The product of its digits is 1354752, while the sum is 49.

The square root of 74647489 is about 8639.8778347845. The cubic root of 74647489 is about 421.0545852571.

The spelling of 74647489 in words is "seventy-four million, six hundred forty-seven thousand, four hundred eighty-nine".