997796461 has 2 divisors, whose sum is σ = 997796462. Its totient is φ = 997796460.

The previous prime is 997796447. The next prime is 997796537. The reversal of 997796461 is 164697799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945870025 + 51926436 = 30755^2 + 7206^2 .

It is a cyclic number.

It is not a de Polignac number, because 997796461 - 2⁹ = 997795949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997796396 and 997796405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997796561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498898230 + 498898231.

It is an arithmetic number, because the mean of its divisors is an integer number (498898231).

Almost surely, 2^997796461 is an apocalyptic number.

It is an amenable number.

997796461 is a deficient number, since it is larger than the sum of its proper divisors (1).

997796461 is an equidigital number, since it uses as much as digits as its factorization.

997796461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 58.

The square root of 997796461 is about 31587.9163763614. The cubic root of 997796461 is about 999.2649468292.

The spelling of 997796461 in words is "nine hundred ninety-seven million, seven hundred ninety-six thousand, four hundred sixty-one".