7626991 has 2 divisors, whose sum is σ = 7626992. Its totient is φ = 7626990.

The previous prime is 7626979. The next prime is 7627003. The reversal of 7626991 is 1996267.

It is a balanced prime because it is at equal distance from previous prime (7626979) and next prime (7627003).

It is a cyclic number.

It is not a de Polignac number, because 7626991 - 2⁵ = 7626959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7626901) by changing a digit.

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 as a sum of consecutive naturals, namely, 3813495 + 3813496.

It is an arithmetic number, because the mean of its divisors is an integer number (3813496).

Almost surely, 2^7626991 is an apocalyptic number.

7626991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7626991 is an equidigital number, since it uses as much as digits as its factorization.

7626991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 7626991 is about 2761.7007441068. The cubic root of 7626991 is about 196.8419889558.

The spelling of 7626991 in words is "seven million, six hundred twenty-six thousand, nine hundred ninety-one".