61868368 has 20 divisors (see below), whose sum is σ = 124004340. Its totient is φ = 29867264.

The previous prime is 61868353. The next prime is 61868371. The reversal of 61868368 is 86386816.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49674304 + 12194064 = 7048^2 + 3492^2 .

It is a congruent number.

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, 66205 + ... + 67132.

It is an arithmetic number, because the mean of its divisors is an integer number (6200217).

Almost surely, 2^61868368 is an apocalyptic number.

It is an amenable number.

61868368 is an abundant number, since it is smaller than the sum of its proper divisors (62135972).

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

61868368 is a wasteful number, since it uses less digits than its factorization.

61868368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133374 (or 133368 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 61868368 is about 7865.6447923867. The cubic root of 61868368 is about 395.5088629441.

It can be divided in two parts, 618 and 68368, that added together give a palindrome (68986).

The spelling of 61868368 in words is "sixty-one million, eight hundred sixty-eight thousand, three hundred sixty-eight".