61117369 has 2 divisors, whose sum is σ = 61117370. Its totient is φ = 61117368.

The previous prime is 61117351. The next prime is 61117391. The reversal of 61117369 is 96371116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 4687225 = 7512^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 61117369 - 2⁷ = 61117241 is a prime.

It is a super-2 number, since 2×61117369² = 7470665586964322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61117349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30558684 + 30558685.

It is an arithmetic number, because the mean of its divisors is an integer number (30558685).

Almost surely, 2^61117369 is an apocalyptic number.

It is an amenable number.

61117369 is a deficient number, since it is larger than the sum of its proper divisors (1).

61117369 is an equidigital number, since it uses as much as digits as its factorization.

61117369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 34.

The square root of 61117369 is about 7817.7598453777. The cubic root of 61117369 is about 393.9020279993.

The spelling of 61117369 in words is "sixty-one million, one hundred seventeen thousand, three hundred sixty-nine".