75700020 has 72 divisors (see below), whose sum is σ = 233003232. Its totient is φ = 18349760.

The previous prime is 75700019. The next prime is 75700021. The reversal of 75700020 is 2000757.

It is an interprime number because it is at equal distance from previous prime (75700019) and next prime (75700021).

It is a self number, because there is not a number n which added to its sum of digits gives 75700020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75700021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2047 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (3236156).

Almost surely, 2^75700020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75700020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116501616).

75700020 is an abundant number, since it is smaller than the sum of its proper divisors (157303212).

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

75700020 is a wasteful number, since it uses less digits than its factorization.

75700020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10461 (or 10448 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 75700020 is about 8700.5758430118. The cubic root of 75700020 is about 423.0243155101.

Adding to 75700020 its reverse (2000757), we get a palindrome (77700777).

The spelling of 75700020 in words is "seventy-five million, seven hundred thousand, twenty".