75424645 has 8 divisors (see below), whose sum is σ = 90556704. Its totient is φ = 60308304.

The previous prime is 75424637. The next prime is 75424667. The reversal of 75424645 is 54642457.

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 75424645 - 2³ = 75424637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14482 + ... + 18988.

It is an arithmetic number, because the mean of its divisors is an integer number (11319588).

Almost surely, 2^75424645 is an apocalyptic number.

It is an amenable number.

75424645 is a deficient number, since it is larger than the sum of its proper divisors (15132059).

75424645 is a wasteful number, since it uses less digits than its factorization.

75424645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859.

The product of its digits is 134400, while the sum is 37.

The square root of 75424645 is about 8684.7363229980. The cubic root of 75424645 is about 422.5107451488.

The spelling of 75424645 in words is "seventy-five million, four hundred twenty-four thousand, six hundred forty-five".