61367768 has 32 divisors (see below), whose sum is σ = 143458560. Its totient is φ = 23909280.

The previous prime is 61367767. The next prime is 61367809. The reversal of 61367768 is 86776316.

It is a happy number.

61367768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61367768³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61367767) 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 7 ways as a sum of consecutive naturals, for example, 49196 + ... + 50427.

It is an arithmetic number, because the mean of its divisors is an integer number (4483080).

Almost surely, 2^61367768 is an apocalyptic number.

It is an amenable number.

61367768 is an abundant number, since it is smaller than the sum of its proper divisors (82090792).

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

61367768 is a wasteful number, since it uses less digits than its factorization.

61367768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99647 (or 99643 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 61367768 is about 7833.7582296111. The cubic root of 61367768 is about 394.4392363320.

The spelling of 61367768 in words is "sixty-one million, three hundred sixty-seven thousand, seven hundred sixty-eight".