75405650 has 12 divisors (see below), whose sum is σ = 140254602. Its totient is φ = 30162240.

The previous prime is 75405643. The next prime is 75405709. The reversal of 75405650 is 5650457.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 50794129 + 24611521 = 7127^2 + 4961^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 754007 + ... + 754106.

Almost surely, 2^75405650 is an apocalyptic number.

75405650 is a deficient number, since it is larger than the sum of its proper divisors (64848952).

75405650 is a wasteful number, since it uses less digits than its factorization.

75405650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508125 (or 1508120 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 75405650 is about 8683.6426688343. The cubic root of 75405650 is about 422.4752736950.

The spelling of 75405650 in words is "seventy-five million, four hundred five thousand, six hundred fifty".