61316369 has 2 divisors, whose sum is σ = 61316370. Its totient is φ = 61316368.

The previous prime is 61316347. The next prime is 61316377. The reversal of 61316369 is 96361316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 4464769 = 7540^2 + 2113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61316369 is a prime.

It is a super-2 number, since 2×61316369² = 7519394214688322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61316309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30658184 + 30658185.

It is an arithmetic number, because the mean of its divisors is an integer number (30658185).

Almost surely, 2^61316369 is an apocalyptic number.

It is an amenable number.

61316369 is a deficient number, since it is larger than the sum of its proper divisors (1).

61316369 is an equidigital number, since it uses as much as digits as its factorization.

61316369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 35.

The square root of 61316369 is about 7830.4769331121. The cubic root of 61316369 is about 394.3290838000.

The spelling of 61316369 in words is "sixty-one million, three hundred sixteen thousand, three hundred sixty-nine".