61408544 has 24 divisors (see below), whose sum is σ = 125068860. Its totient is φ = 29645056.

The previous prime is 61408531. The next prime is 61408553. The reversal of 61408544 is 44580416.

It can be written as a sum of positive squares in 2 ways, for example, as 57456400 + 3952144 = 7580^2 + 1988^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 61408544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32159 + ... + 34014.

Almost surely, 2^61408544 is an apocalyptic number.

It is an amenable number.

61408544 is an abundant number, since it is smaller than the sum of its proper divisors (63660316).

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

61408544 is a wasteful number, since it uses less digits than its factorization.

61408544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66212 (or 66204 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 61408544 is about 7836.3603796661. The cubic root of 61408544 is about 394.5265791064.

The spelling of 61408544 in words is "sixty-one million, four hundred eight thousand, five hundred forty-four".