7213656227 has 4 divisors (see below), whose sum is σ = 7213980096. Its totient is φ = 7213332360.

The previous prime is 7213656193. The next prime is 7213656269. The reversal of 7213656227 is 7226563127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7213656227 - 2²² = 7209461923 is a prime.

It is a super-2 number, since 2×7213656227² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7213656287) 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, 125843 + ... + 173964.

It is an arithmetic number, because the mean of its divisors is an integer number (1803495024).

Almost surely, 2^7213656227 is an apocalyptic number.

7213656227 is a deficient number, since it is larger than the sum of its proper divisors (323869).

7213656227 is a wasteful number, since it uses less digits than its factorization.

7213656227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323868.

The product of its digits is 211680, while the sum is 41.

The square root of 7213656227 is about 84933.2457109700. The cubic root of 7213656227 is about 1932.1988261578.

The spelling of 7213656227 in words is "seven billion, two hundred thirteen million, six hundred fifty-six thousand, two hundred twenty-seven".