97782563 has 2 divisors, whose sum is σ = 97782564. Its totient is φ = 97782562.

The previous prime is 97782539. The next prime is 97782571. The reversal of 97782563 is 36528779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97782563 - 2¹² = 97778467 is a prime.

It is a super-2 number, since 2×97782563² = 19122859253697938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97782533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48891281 + 48891282.

It is an arithmetic number, because the mean of its divisors is an integer number (48891282).

Almost surely, 2^97782563 is an apocalyptic number.

97782563 is a deficient number, since it is larger than the sum of its proper divisors (1).

97782563 is an equidigital number, since it uses as much as digits as its factorization.

97782563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 97782563 is about 9888.5066112128. The cubic root of 97782563 is about 460.7023973124.

It can be divided in two parts, 977 and 82563, that multiplied together give a triangular number (80664051 = T₁₂₇₀₁).

The spelling of 97782563 in words is "ninety-seven million, seven hundred eighty-two thousand, five hundred sixty-three".