7720063 has 4 divisors (see below), whose sum is σ = 8313928. Its totient is φ = 7126200.

The previous prime is 7720051. The next prime is 7720067. The reversal of 7720063 is 3600277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3600277 = 17 ⋅211781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7720063 is a prime.

It is the 2779-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7720067) by changing a digit.

It is a nontrivial repunit in base 2778.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296913 + ... + 296938.

It is an arithmetic number, because the mean of its divisors is an integer number (2078482).

Almost surely, 2^7720063 is an apocalyptic number.

7720063 is a deficient number, since it is larger than the sum of its proper divisors (593865).

7720063 is a wasteful number, since it uses less digits than its factorization.

7720063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593864.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 7720063 is about 2778.5001349649. The cubic root of 7720063 is about 197.6394400641.

The spelling of 7720063 in words is "seven million, seven hundred twenty thousand, sixty-three".