997763527 has 2 divisors, whose sum is σ = 997763528. Its totient is φ = 997763526.

The previous prime is 997763521. The next prime is 997763579. The reversal of 997763527 is 725367799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997763527 - 2¹⁹ = 997239239 is a prime.

It is a super-2 number, since 2×997763527² = 1991064111622959458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997763521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498881763 + 498881764.

It is an arithmetic number, because the mean of its divisors is an integer number (498881764).

Almost surely, 2^997763527 is an apocalyptic number.

997763527 is a deficient number, since it is larger than the sum of its proper divisors (1).

997763527 is an equidigital number, since it uses as much as digits as its factorization.

997763527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000940, while the sum is 55.

The square root of 997763527 is about 31587.3950651205. The cubic root of 997763527 is about 999.2539525516.

The spelling of 997763527 in words is "nine hundred ninety-seven million, seven hundred sixty-three thousand, five hundred twenty-seven".