76001720 has 16 divisors (see below), whose sum is σ = 171003960. Its totient is φ = 30400672.

The previous prime is 76001699. The next prime is 76001749. The reversal of 76001720 is 2710067.

It is a happy number.

It is a super-2 number, since 2×76001720² = 11552522885916800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949982 + ... + 950061.

Almost surely, 2^76001720 is an apocalyptic number.

It is an amenable number.

76001720 is an abundant number, since it is smaller than the sum of its proper divisors (95002240).

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

76001720 is a wasteful number, since it uses less digits than its factorization.

76001720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900054 (or 1900050 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 76001720 is about 8717.8965352888. The cubic root of 76001720 is about 423.5855538472.

Adding to 76001720 its reverse (2710067), we get a palindrome (78711787).

The spelling of 76001720 in words is "seventy-six million, one thousand, seven hundred twenty".