61061345 has 12 divisors (see below), whose sum is σ = 77335380. Its totient is φ = 46276704.

The previous prime is 61061339. The next prime is 61061381. The reversal of 61061345 is 54316016.

It can be written as a sum of positive squares in 2 ways, for example, as 33362176 + 27699169 = 5776^2 + 5263^2 .

It is not a de Polignac number, because 61061345 - 2⁶ = 61061281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15110 + ... + 18719.

It is an arithmetic number, because the mean of its divisors is an integer number (6444615).

Almost surely, 2^61061345 is an apocalyptic number.

It is an amenable number.

61061345 is a deficient number, since it is larger than the sum of its proper divisors (16274035).

61061345 is a wasteful number, since it uses less digits than its factorization.

61061345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33872 (or 33853 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61061345 is about 7814.1759002469. The cubic root of 61061345 is about 393.7816327992.

The spelling of 61061345 in words is "sixty-one million, sixty-one thousand, three hundred forty-five".