97697407 has 2 divisors, whose sum is σ = 97697408. Its totient is φ = 97697406.

The previous prime is 97697381. The next prime is 97697423. The reversal of 97697407 is 70479679.

It is a strong prime.

It is an emirp because it is prime and its reverse (70479679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97697407 - 2¹⁹ = 97173119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97697437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48848703 + 48848704.

It is an arithmetic number, because the mean of its divisors is an integer number (48848704).

Almost surely, 2^97697407 is an apocalyptic number.

97697407 is a deficient number, since it is larger than the sum of its proper divisors (1).

97697407 is an equidigital number, since it uses as much as digits as its factorization.

97697407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 97697407 is about 9884.1998664535. The cubic root of 97697407 is about 460.5686210160.

The spelling of 97697407 in words is "ninety-seven million, six hundred ninety-seven thousand, four hundred seven".