61371772 has 48 divisors (see below), whose sum is σ = 138539520. Its totient is φ = 23083200.

The previous prime is 61371731. The next prime is 61371773. The reversal of 61371772 is 27717316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61371773) 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, 5497 + ... + 12367.

It is an arithmetic number, because the mean of its divisors is an integer number (2886240).

Almost surely, 2^61371772 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 61371772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69269760).

61371772 is an abundant number, since it is smaller than the sum of its proper divisors (77167748).

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

61371772 is a wasteful number, since it uses less digits than its factorization.

61371772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6922 (or 6920 counting only the distinct ones).

The product of its digits is 12348, while the sum is 34.

The square root of 61371772 is about 7834.0137860486. The cubic root of 61371772 is about 394.4478146699.

The spelling of 61371772 in words is "sixty-one million, three hundred seventy-one thousand, seven hundred seventy-two".