61042969 has 9 divisors (see below), whose sum is σ = 66209949. Its totient is φ = 56253600.

The previous prime is 61042967. The next prime is 61042979. The reversal of 61042969 is 96924016.

The square root of 61042969 is 7813.

It is a perfect power (a square), and thus also a powerful number.

61042969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 61027344 = 125^2 + 7812^2 .

It is not a de Polignac number, because 61042969 - 2¹ = 61042967 is a prime.

It is a super-2 number, since 2×61042969² = 7452488128669922, which contains 22 as substring.

It is a plaindrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (61042967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 101269 + ... + 101869.

It is an arithmetic number, because the mean of its divisors is an integer number (7356661).

Almost surely, 2^61042969 is an apocalyptic number.

61042969 is the 7813-rd square number.

61042969 is the 3907-th centered octagonal number.

It is an amenable number.

61042969 is a deficient number, since it is larger than the sum of its proper divisors (5166980).

61042969 is an frugal number, since it uses more digits than its factorization.

61042969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The cubic root of 61042969 is about 393.7421268603.

The spelling of 61042969 in words is "sixty-one million, forty-two thousand, nine hundred sixty-nine".