7220746813 has 4 divisors (see below), whose sum is σ = 8252282080. Its totient is φ = 6189211548.

The previous prime is 7220746807. The next prime is 7220746853. The reversal of 7220746813 is 3186470227.

7220746813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7220746813 - 2¹⁷ = 7220615741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220746853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515767623 + ... + 515767636.

It is an arithmetic number, because the mean of its divisors is an integer number (2063070520).

Almost surely, 2^7220746813 is an apocalyptic number.

It is an amenable number.

7220746813 is a deficient number, since it is larger than the sum of its proper divisors (1031535267).

7220746813 is a wasteful number, since it uses less digits than its factorization.

7220746813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031535266.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 7220746813 is about 84974.9775698705. The cubic root of 7220746813 is about 1932.8316968811.

The spelling of 7220746813 in words is "seven billion, two hundred twenty million, seven hundred forty-six thousand, eight hundred thirteen".