61466221 has 8 divisors (see below), whose sum is σ = 63131904. Its totient is φ = 59811360.

The previous prime is 61466183. The next prime is 61466227. The reversal of 61466221 is 12266416.

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

It is a cyclic number.

It is not a de Polignac number, because 61466221 - 2⁹ = 61465709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61466221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61466227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9540 + ... + 14626.

It is an arithmetic number, because the mean of its divisors is an integer number (7891488).

Almost surely, 2^61466221 is an apocalyptic number.

It is an amenable number.

61466221 is a deficient number, since it is larger than the sum of its proper divisors (1665683).

61466221 is a wasteful number, since it uses less digits than its factorization.

61466221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411.

The product of its digits is 3456, while the sum is 28.

The square root of 61466221 is about 7840.0396044918. The cubic root of 61466221 is about 394.6500580644.

The spelling of 61466221 in words is "sixty-one million, four hundred sixty-six thousand, two hundred twenty-one".