61441264 has 40 divisors (see below), whose sum is σ = 127224000. Its totient is φ = 28643328.

The previous prime is 61441249. The next prime is 61441277. The reversal of 61441264 is 46214416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29737 + ... + 31735.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^61441264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61441264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63612000).

61441264 is an abundant number, since it is smaller than the sum of its proper divisors (65782736).

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

61441264 is a wasteful number, since it uses less digits than its factorization.

61441264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137 (or 2131 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 61441264 is about 7838.4478055288. The cubic root of 61441264 is about 394.5966378570.

The spelling of 61441264 in words is "sixty-one million, four hundred forty-one thousand, two hundred sixty-four".