61447216 has 20 divisors (see below), whose sum is σ = 125320600. Its totient is φ = 29106432.

The previous prime is 61447213. The next prime is 61447219. The reversal of 61447216 is 61274416.

It is an interprime number because it is at equal distance from previous prime (61447213) and next prime (61447219).

It is not an unprimeable number, because it can be changed into a prime (61447213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100761 + ... + 101368.

It is an arithmetic number, because the mean of its divisors is an integer number (6266030).

Almost surely, 2^61447216 is an apocalyptic number.

It is an amenable number.

61447216 is an abundant number, since it is smaller than the sum of its proper divisors (63873384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61447216 is a wasteful number, since it uses less digits than its factorization.

61447216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202156 (or 202150 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 61447216 is about 7838.8274633391. The cubic root of 61447216 is about 394.6093793665.

The spelling of 61447216 in words is "sixty-one million, four hundred forty-seven thousand, two hundred sixteen".