75664020 has 48 divisors (see below), whose sum is σ = 221074560. Its totient is φ = 19299456.

The previous prime is 75664007. The next prime is 75664021. The reversal of 75664020 is 2046657.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75664021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26035 + ... + 28794.

It is an arithmetic number, because the mean of its divisors is an integer number (4605720).

Almost surely, 2^75664020 is an apocalyptic number.

It is an amenable number.

75664020 is an abundant number, since it is smaller than the sum of its proper divisors (145410540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75664020 is a wasteful number, since it uses less digits than its factorization.

75664020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54864 (or 54862 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 75664020 is about 8698.5067684057. The cubic root of 75664020 is about 422.9572468792.

The spelling of 75664020 in words is "seventy-five million, six hundred sixty-four thousand, twenty".