61908097 has 2 divisors, whose sum is σ = 61908098. Its totient is φ = 61908096.

The previous prime is 61908079. The next prime is 61908103. The reversal of 61908097 is 79080916.

Together with previous prime (61908079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 17272336 = 6681^2 + 4156^2 .

It is a cyclic number.

It is not a de Polignac number, because 61908097 - 2¹¹ = 61906049 is a prime.

It is a super-2 number, since 2×61908097² = 7665224948322818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61948097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30954048 + 30954049.

It is an arithmetic number, because the mean of its divisors is an integer number (30954049).

Almost surely, 2^61908097 is an apocalyptic number.

It is an amenable number.

61908097 is a deficient number, since it is larger than the sum of its proper divisors (1).

61908097 is an equidigital number, since it uses as much as digits as its factorization.

61908097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 61908097 is about 7868.1698634435. The cubic root of 61908097 is about 395.5935039860.

The spelling of 61908097 in words is "sixty-one million, nine hundred eight thousand, ninety-seven".