75448647 has 18 divisors (see below), whose sum is σ = 110604416. Its totient is φ = 49560840.

The previous prime is 75448619. The next prime is 75448729. The reversal of 75448647 is 74684457.

It is not a de Polignac number, because 75448647 - 2⁷ = 75448519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75448147) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44538 + ... + 46200.

Almost surely, 2^75448647 is an apocalyptic number.

75448647 is a deficient number, since it is larger than the sum of its proper divisors (35155769).

75448647 is a wasteful number, since it uses less digits than its factorization.

75448647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 1737 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 75448647 is about 8686.1180627482. The cubic root of 75448647 is about 422.5555582086. Note that the first 5 decimals are identical.

The spelling of 75448647 in words is "seventy-five million, four hundred forty-eight thousand, six hundred forty-seven".