61134869 has 2 divisors, whose sum is σ = 61134870. Its totient is φ = 61134868.

The previous prime is 61134817. The next prime is 61134877. The reversal of 61134869 is 96843116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59089969 + 2044900 = 7687^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61134869 is a prime.

It is a super-2 number, since 2×61134869² = 7474944415294322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61134809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30567434 + 30567435.

It is an arithmetic number, because the mean of its divisors is an integer number (30567435).

Almost surely, 2^61134869 is an apocalyptic number.

It is an amenable number.

61134869 is a deficient number, since it is larger than the sum of its proper divisors (1).

61134869 is an equidigital number, since it uses as much as digits as its factorization.

61134869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 61134869 is about 7818.8790117254. The cubic root of 61134869 is about 393.9396203007.

The spelling of 61134869 in words is "sixty-one million, one hundred thirty-four thousand, eight hundred sixty-nine".