997350077 has 2 divisors, whose sum is σ = 997350078. Its totient is φ = 997350076.

The previous prime is 997350031. The next prime is 997350083. The reversal of 997350077 is 770053799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994834681 + 2515396 = 31541^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 997350077 - 2¹⁸ = 997087933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997350097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498675038 + 498675039.

It is an arithmetic number, because the mean of its divisors is an integer number (498675039).

Almost surely, 2^997350077 is an apocalyptic number.

It is an amenable number.

997350077 is a deficient number, since it is larger than the sum of its proper divisors (1).

997350077 is an equidigital number, since it uses as much as digits as its factorization.

997350077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 416745, while the sum is 47.

The square root of 997350077 is about 31580.8498460697. The cubic root of 997350077 is about 999.1159109502.

The spelling of 997350077 in words is "nine hundred ninety-seven million, three hundred fifty thousand, seventy-seven".