128062997 has 2 divisors, whose sum is σ = 128062998. Its totient is φ = 128062996.

The previous prime is 128062939. The next prime is 128063003. The reversal of 128062997 is 799260821.

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., 121308196 + 6754801 = 11014^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 128062997 - 2¹² = 128058901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128062897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64031498 + 64031499.

It is an arithmetic number, because the mean of its divisors is an integer number (64031499).

Almost surely, 2^128062997 is an apocalyptic number.

It is an amenable number.

128062997 is a deficient number, since it is larger than the sum of its proper divisors (1).

128062997 is an equidigital number, since it uses as much as digits as its factorization.

128062997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 128062997 is about 11316.4922568789. The cubic root of 128062997 is about 504.0510847795.

The spelling of 128062997 in words is "one hundred twenty-eight million, sixty-two thousand, nine hundred ninety-seven".