61221070 has 8 divisors (see below), whose sum is σ = 110197944. Its totient is φ = 24488424.

The previous prime is 61221047. The next prime is 61221073. The reversal of 61221070 is 7012216.

61221070 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (61221073) 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, 3061044 + ... + 3061063.

It is an arithmetic number, because the mean of its divisors is an integer number (13774743).

Almost surely, 2^61221070 is an apocalyptic number.

61221070 is a deficient number, since it is larger than the sum of its proper divisors (48976874).

61221070 is a wasteful number, since it uses less digits than its factorization.

61221070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6122114.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 61221070 is about 7824.3894330484. The cubic root of 61221070 is about 394.1246867603.

Adding to 61221070 its reverse (7012216), we get a palindrome (68233286).

The spelling of 61221070 in words is "sixty-one million, two hundred twenty-one thousand, seventy".