997580741 has 2 divisors, whose sum is σ = 997580742. Its totient is φ = 997580740.

The previous prime is 997580719. The next prime is 997580747. The reversal of 997580741 is 147085799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 833996641 + 163584100 = 28879^2 + 12790^2 .

It is a cyclic number.

It is not a de Polignac number, because 997580741 - 2⁶ = 997580677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997580741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997580747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498790370 + 498790371.

It is an arithmetic number, because the mean of its divisors is an integer number (498790371).

Almost surely, 2^997580741 is an apocalyptic number.

It is an amenable number.

997580741 is a deficient number, since it is larger than the sum of its proper divisors (1).

997580741 is an equidigital number, since it uses as much as digits as its factorization.

997580741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 997580741 is about 31584.5015949279. The cubic root of 997580741 is about 999.1929291452.

The spelling of 997580741 in words is "nine hundred ninety-seven million, five hundred eighty thousand, seven hundred forty-one".