7612321 has 2 divisors, whose sum is σ = 7612322. Its totient is φ = 7612320.

The previous prime is 7612313. The next prime is 7612327. The reversal of 7612321 is 1232167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5760000 + 1852321 = 2400^2 + 1361^2 .

It is a cyclic number.

It is not a de Polignac number, because 7612321 - 2³ = 7612313 is a prime.

It is a super-3 number, since 3×7612321³ (a number of 22 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7612292 and 7612301.

It is not a weakly prime, because it can be changed into another prime (7612327) 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 as a sum of consecutive naturals, namely, 3806160 + 3806161.

It is an arithmetic number, because the mean of its divisors is an integer number (3806161).

Almost surely, 2^7612321 is an apocalyptic number.

It is an amenable number.

7612321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7612321 is an equidigital number, since it uses as much as digits as its factorization.

7612321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 7612321 is about 2759.0434936767. The cubic root of 7612321 is about 196.7157038816.

Adding to 7612321 its reverse (1232167), we get a palindrome (8844488).

It can be divided in two parts, 76 and 12321, that multiplied together give a triangular number (936396 = T₁₃₆₈).

The spelling of 7612321 in words is "seven million, six hundred twelve thousand, three hundred twenty-one".