61334145 has 32 divisors (see below), whose sum is σ = 110682240. Its totient is φ = 32218560.

The previous prime is 61334137. The next prime is 61334149. The reversal of 61334145 is 54143316.

61334145 is a `hidden beast` number, since 613 + 3 + 4 + 1 + 45 = 666.

61334145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61334145 - 2³ = 61334137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61334149) 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 31 ways as a sum of consecutive naturals, for example, 5655 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (3458820).

Almost surely, 2^61334145 is an apocalyptic number.

It is an amenable number.

61334145 is a deficient number, since it is larger than the sum of its proper divisors (49348095).

61334145 is a wasteful number, since it uses less digits than its factorization.

61334145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862 (or 6856 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 61334145 is about 7831.6119030504. The cubic root of 61334145 is about 394.3671862765.

The spelling of 61334145 in words is "sixty-one million, three hundred thirty-four thousand, one hundred forty-five".