61368849 has 12 divisors (see below), whose sum is σ = 89096436. Its totient is φ = 40703712.

The previous prime is 61368847. The next prime is 61368863. The reversal of 61368849 is 94886316.

It can be written as a sum of positive squares in 2 ways, for example, as 45805824 + 15563025 = 6768^2 + 3945^2 .

It is not a de Polignac number, because 61368849 - 2¹ = 61368847 is a prime.

It is a super-2 number, since 2×61368849² = 7532271255169602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61368847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15534 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (7424703).

Almost surely, 2^61368849 is an apocalyptic number.

It is an amenable number.

61368849 is a deficient number, since it is larger than the sum of its proper divisors (27727587).

61368849 is a wasteful number, since it uses less digits than its factorization.

61368849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34816 (or 34813 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 61368849 is about 7833.8272255648. The cubic root of 61368849 is about 394.4415523486.

The spelling of 61368849 in words is "sixty-one million, three hundred sixty-eight thousand, eight hundred forty-nine".