1207649 has 2 divisors, whose sum is σ = 1207650. Its totient is φ = 1207648.

The previous prime is 1207627. The next prime is 1207681. The reversal of 1207649 is 9467021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1014049 + 193600 = 1007^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1207649 - 2²⁰ = 159073 is a prime.

It is a super-2 number, since 2×1207649² = 2916832214402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1207699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603824 + 603825.

It is an arithmetic number, because the mean of its divisors is an integer number (603825).

2^1207649 is an apocalyptic number.

It is an amenable number.

1207649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1207649 is an equidigital number, since it uses as much as digits as its factorization.

1207649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1207649 is about 1098.9308440480. The cubic root of 1207649 is about 106.4911643062.

The spelling of 1207649 in words is "one million, two hundred seven thousand, six hundred forty-nine".