61976320 has 72 divisors (see below), whose sum is σ = 169684704. Its totient is φ = 21245952.

The previous prime is 61976303. The next prime is 61976323. The reversal of 61976320 is 2367916.

61976320 = T₂₄₁₉ + T₂₄₂₀ + ... + T₂₄₃₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61976323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5502 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (2356732).

Almost surely, 2^61976320 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 61976320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84842352).

61976320 is an abundant number, since it is smaller than the sum of its proper divisors (107708384).

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

61976320 is an equidigital number, since it uses as much as digits as its factorization.

61976320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6945 (or 6931 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 61976320 is about 7872.5040489034. The cubic root of 61976320 is about 395.7387659100.

The spelling of 61976320 in words is "sixty-one million, nine hundred seventy-six thousand, three hundred twenty".