997729063 has 2 divisors, whose sum is σ = 997729064. Its totient is φ = 997729062.

The previous prime is 997729049. The next prime is 997729069. The reversal of 997729063 is 360927799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997729063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997729063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997729069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498864531 + 498864532.

It is an arithmetic number, because the mean of its divisors is an integer number (498864532).

Almost surely, 2^997729063 is an apocalyptic number.

997729063 is a deficient number, since it is larger than the sum of its proper divisors (1).

997729063 is an equidigital number, since it uses as much as digits as its factorization.

997729063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 52.

The square root of 997729063 is about 31586.8495263456. The cubic root of 997729063 is about 999.2424472588.

The spelling of 997729063 in words is "nine hundred ninety-seven million, seven hundred twenty-nine thousand, sixty-three".