75664450 has 24 divisors (see below), whose sum is σ = 149016132. Its totient is φ = 28485120.

The previous prime is 75664409. The next prime is 75664471. The reversal of 75664450 is 5446657.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 31348801 + 44315649 = 5599^2 + 6657^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43659 + ... + 45358.

Almost surely, 2^75664450 is an apocalyptic number.

75664450 is a deficient number, since it is larger than the sum of its proper divisors (73351682).

75664450 is a wasteful number, since it uses less digits than its factorization.

75664450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89046 (or 89041 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 75664450 is about 8698.5314852566. The cubic root of 75664450 is about 422.9580481023.

The spelling of 75664450 in words is "seventy-five million, six hundred sixty-four thousand, four hundred fifty".