61325616 has 80 divisors (see below), whose sum is σ = 181952640. Its totient is φ = 17602560.

The previous prime is 61325609. The next prime is 61325617. The reversal of 61325616 is 61652316.

It is not an unprimeable number, because it can be changed into a prime (61325617) 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, 6976 + ... + 13088.

It is an arithmetic number, because the mean of its divisors is an integer number (2274408).

Almost surely, 2^61325616 is an apocalyptic number.

61325616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61325616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90976320).

61325616 is an abundant number, since it is smaller than the sum of its proper divisors (120627024).

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

61325616 is a wasteful number, since it uses less digits than its factorization.

61325616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154 (or 6148 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 61325616 is about 7831.0673602007. The cubic root of 61325616 is about 394.3489054659.

The spelling of 61325616 in words is "sixty-one million, three hundred twenty-five thousand, six hundred sixteen".