97878371 has 2 divisors, whose sum is σ = 97878372. Its totient is φ = 97878370.

The previous prime is 97878359. The next prime is 97878413. The reversal of 97878371 is 17387879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97878371 - 2⁶ = 97878307 is a prime.

It is a super-2 number, since 2×97878371² = 19160351019227282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97878301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48939185 + 48939186.

It is an arithmetic number, because the mean of its divisors is an integer number (48939186).

Almost surely, 2^97878371 is an apocalyptic number.

97878371 is a deficient number, since it is larger than the sum of its proper divisors (1).

97878371 is an equidigital number, since it uses as much as digits as its factorization.

97878371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 50.

The square root of 97878371 is about 9893.3498371381. The cubic root of 97878371 is about 460.8528146121.

The spelling of 97878371 in words is "ninety-seven million, eight hundred seventy-eight thousand, three hundred seventy-one".