61850320 has 80 divisors (see below), whose sum is σ = 173024640. Its totient is φ = 20086272.

The previous prime is 61850309. The next prime is 61850323. The reversal of 61850320 is 2305816.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61850323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7734 + ... + 13546.

It is an arithmetic number, because the mean of its divisors is an integer number (2162808).

Almost surely, 2^61850320 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 61850320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86512320).

61850320 is an abundant number, since it is smaller than the sum of its proper divisors (111174320).

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

61850320 is a wasteful number, since it uses less digits than its factorization.

61850320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852 (or 5846 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61850320 is about 7864.4974410321. The cubic root of 61850320 is about 395.4704004341.

The spelling of 61850320 in words is "sixty-one million, eight hundred fifty thousand, three hundred twenty".