61613208 has 24 divisors (see below), whose sum is σ = 166869300. Its totient is φ = 20537712.

The previous prime is 61613207. The next prime is 61613269. The reversal of 61613208 is 80231616.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61613203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427798 + ... + 427941.

Almost surely, 2^61613208 is an apocalyptic number.

It is an amenable number.

61613208 is an abundant number, since it is smaller than the sum of its proper divisors (105256092).

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

61613208 is a wasteful number, since it uses less digits than its factorization.

61613208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855751 (or 855744 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 61613208 is about 7849.4081305535. The cubic root of 61613208 is about 394.9643892481.

It can be divided in two parts, 616 and 13208, that added together give a cube (13824 = 24³).

The spelling of 61613208 in words is "sixty-one million, six hundred thirteen thousand, two hundred eight".