61221346 has 8 divisors (see below), whose sum is σ = 92723904. Its totient is φ = 30313380.

The previous prime is 61221343. The next prime is 61221353. The reversal of 61221346 is 64312216.

61221346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61221346.

It is not an unprimeable number, because it can be changed into a prime (61221341) 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 3 ways as a sum of consecutive naturals, for example, 148390 + ... + 148801.

It is an arithmetic number, because the mean of its divisors is an integer number (11590488).

Almost surely, 2^61221346 is an apocalyptic number.

61221346 is a deficient number, since it is larger than the sum of its proper divisors (31502558).

61221346 is a wasteful number, since it uses less digits than its factorization.

61221346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297296.

The product of its digits is 1728, while the sum is 25.

The square root of 61221346 is about 7824.4070701875. The cubic root of 61221346 is about 394.1252790305.

The spelling of 61221346 in words is "sixty-one million, two hundred twenty-one thousand, three hundred forty-six".