11620649 has 2 divisors, whose sum is σ = 11620650. Its totient is φ = 11620648.

The previous prime is 11620643. The next prime is 11620667. The reversal of 11620649 is 94602611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11424400 + 196249 = 3380^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 11620649 - 2⁴ = 11620633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11620643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810324 + 5810325.

It is an arithmetic number, because the mean of its divisors is an integer number (5810325).

Almost surely, 2^11620649 is an apocalyptic number.

It is an amenable number.

11620649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11620649 is an equidigital number, since it uses as much as digits as its factorization.

11620649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 11620649 is about 3408.9073029345. The cubic root of 11620649 is about 226.5044790847.

The spelling of 11620649 in words is "eleven million, six hundred twenty thousand, six hundred forty-nine".