61347889 has 2 divisors, whose sum is σ = 61347890. Its totient is φ = 61347888.

The previous prime is 61347857. The next prime is 61347899. The reversal of 61347889 is 98874316.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33732864 + 27615025 = 5808^2 + 5255^2 .

It is a cyclic number.

It is not a de Polignac number, because 61347889 - 2⁵ = 61347857 is a prime.

It is not a weakly prime, because it can be changed into another prime (61347809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30673944 + 30673945.

It is an arithmetic number, because the mean of its divisors is an integer number (30673945).

Almost surely, 2^61347889 is an apocalyptic number.

It is an amenable number.

61347889 is a deficient number, since it is larger than the sum of its proper divisors (1).

61347889 is an equidigital number, since it uses as much as digits as its factorization.

61347889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 61347889 is about 7832.4893233250. The cubic root of 61347889 is about 394.3966412008.

The spelling of 61347889 in words is "sixty-one million, three hundred forty-seven thousand, eight hundred eighty-nine".