97378693 has 2 divisors, whose sum is σ = 97378694. Its totient is φ = 97378692.

The previous prime is 97378691. The next prime is 97378717. The reversal of 97378693 is 39687379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 887364 = 9823^2 + 942^2 .

It is an emirp because it is prime and its reverse (39687379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97378693 - 2¹ = 97378691 is a prime.

Together with 97378691, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 97378693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97378691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48689346 + 48689347.

It is an arithmetic number, because the mean of its divisors is an integer number (48689347).

Almost surely, 2^97378693 is an apocalyptic number.

It is an amenable number.

97378693 is a deficient number, since it is larger than the sum of its proper divisors (1).

97378693 is an equidigital number, since it uses as much as digits as its factorization.

97378693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 52.

The square root of 97378693 is about 9868.0642985339. The cubic root of 97378693 is about 460.0672444228.

The spelling of 97378693 in words is "ninety-seven million, three hundred seventy-eight thousand, six hundred ninety-three".