7836649 has 2 divisors, whose sum is σ = 7836650. Its totient is φ = 7836648.

The previous prime is 7836613. The next prime is 7836659. The reversal of 7836649 is 9466387.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 3489424 = 2085^2 + 1868^2 .

It is a cyclic number.

It is not a de Polignac number, because 7836649 - 2¹⁵ = 7803881 is a prime.

It is a super-2 number, since 2×7836649² = 122826135098402, which contains 22 as substring.

7836649 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7836659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3918324 + 3918325.

It is an arithmetic number, because the mean of its divisors is an integer number (3918325).

Almost surely, 2^7836649 is an apocalyptic number.

It is an amenable number.

7836649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7836649 is an equidigital number, since it uses as much as digits as its factorization.

7836649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 7836649 is about 2799.4015431874. The cubic root of 7836649 is about 198.6293699911.

The spelling of 7836649 in words is "seven million, eight hundred thirty-six thousand, six hundred forty-nine".