61226064 has 80 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 20289024.

The previous prime is 61226059. The next prime is 61226071. The reversal of 61226064 is 46062216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102952 + ... + 103544.

It is an arithmetic number, because the mean of its divisors is an integer number (2209680).

Almost surely, 2^61226064 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 61226064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88387200).

61226064 is an abundant number, since it is smaller than the sum of its proper divisors (115548336).

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

61226064 is a wasteful number, since it uses less digits than its factorization.

61226064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 61226064 is about 7824.7085568729. The cubic root of 61226064 is about 394.1354031426.

The spelling of 61226064 in words is "sixty-one million, two hundred twenty-six thousand, sixty-four".