128622701 has 2 divisors, whose sum is σ = 128622702. Its totient is φ = 128622700.

The previous prime is 128622643. The next prime is 128622719. The reversal of 128622701 is 107226821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126450025 + 2172676 = 11245^2 + 1474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128622701 is a prime.

It is a Chen prime.

It is equal to p_7304366 and since 128622701 and 7304366 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118622701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64311350 + 64311351.

It is an arithmetic number, because the mean of its divisors is an integer number (64311351).

Almost surely, 2^128622701 is an apocalyptic number.

It is an amenable number.

128622701 is a deficient number, since it is larger than the sum of its proper divisors (1).

128622701 is an equidigital number, since it uses as much as digits as its factorization.

128622701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 128622701 is about 11341.1948665033. The cubic root of 128622701 is about 504.7843421232.

The spelling of 128622701 in words is "one hundred twenty-eight million, six hundred twenty-two thousand, seven hundred one".