61996608 has 84 divisors (see below), whose sum is σ = 182567580. Its totient is φ = 20100096.

The previous prime is 61996541. The next prime is 61996609. The reversal of 61996608 is 80669916.

It can be written as a sum of positive squares in 2 ways, for example, as 54641664 + 7354944 = 7392^2 + 2712^2 .

It is not an unprimeable number, because it can be changed into a prime (61996609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19858 + ... + 22766.

Almost surely, 2^61996608 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 61996608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91283790).

61996608 is an abundant number, since it is smaller than the sum of its proper divisors (120570972).

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

61996608 is a wasteful number, since it uses less digits than its factorization.

61996608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 61996608 is about 7873.7924788503. The cubic root of 61996608 is about 395.7819430040.

The spelling of 61996608 in words is "sixty-one million, nine hundred ninety-six thousand, six hundred eight".