61797408 has 24 divisors (see below), whose sum is σ = 162218448. Its totient is φ = 20599104.

The previous prime is 61797403. The next prime is 61797409. The reversal of 61797408 is 80479716.

61797408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61797408.

It is not an unprimeable number, because it can be changed into a prime (61797403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321766 + ... + 321957.

It is an arithmetic number, because the mean of its divisors is an integer number (6759102).

Almost surely, 2^61797408 is an apocalyptic number.

It is an amenable number.

61797408 is an abundant number, since it is smaller than the sum of its proper divisors (100421040).

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

61797408 is a wasteful number, since it uses less digits than its factorization.

61797408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643736 (or 643728 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 61797408 is about 7861.1327428049. The cubic root of 61797408 is about 395.3575953065.

The spelling of 61797408 in words is "sixty-one million, seven hundred ninety-seven thousand, four hundred eight".