61069843 has 2 divisors, whose sum is σ = 61069844. Its totient is φ = 61069842.

The previous prime is 61069817. The next prime is 61069859. The reversal of 61069843 is 34896016.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61069843 is a prime.

It is not a weakly prime, because it can be changed into another prime (61069243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30534921 + 30534922.

It is an arithmetic number, because the mean of its divisors is an integer number (30534922).

Almost surely, 2^61069843 is an apocalyptic number.

61069843 is a deficient number, since it is larger than the sum of its proper divisors (1).

61069843 is an equidigital number, since it uses as much as digits as its factorization.

61069843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 61069843 is about 7814.7196366856. The cubic root of 61069843 is about 393.7998996808.

The spelling of 61069843 in words is "sixty-one million, sixty-nine thousand, eight hundred forty-three".