122772649 has 2 divisors, whose sum is σ = 122772650. Its totient is φ = 122772648.

The previous prime is 122772607. The next prime is 122772659. The reversal of 122772649 is 946277221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102657424 + 20115225 = 10132^2 + 4485^2 .

It is a cyclic number.

It is not a de Polignac number, because 122772649 - 2¹⁷ = 122641577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122772659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61386324 + 61386325.

It is an arithmetic number, because the mean of its divisors is an integer number (61386325).

Almost surely, 2^122772649 is an apocalyptic number.

It is an amenable number.

122772649 is a deficient number, since it is larger than the sum of its proper divisors (1).

122772649 is an equidigital number, since it uses as much as digits as its factorization.

122772649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 122772649 is about 11080.2819909964. The cubic root of 122772649 is about 497.0123825062.

The spelling of 122772649 in words is "one hundred twenty-two million, seven hundred seventy-two thousand, six hundred forty-nine".