68787576 has 256 divisors, whose sum is σ = 239500800. Its totient is φ = 17971200.

The previous prime is 68787571. The next prime is 68787601. The reversal of 68787576 is 67578786.

68787576 is a `hidden beast` number, since 68 + 7 + 8 + 7 + 576 = 666.

It is a super-2 number, since 2×68787576² = 9463461223911552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68787571) 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 63 ways as a sum of consecutive naturals, for example, 525031 + ... + 525161.

It is an arithmetic number, because the mean of its divisors is an integer number (935550).

Almost surely, 2^68787576 is an apocalyptic number.

68787576 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68787576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119750400).

68787576 is an abundant number, since it is smaller than the sum of its proper divisors (170713224).

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

68787576 is a wasteful number, since it uses less digits than its factorization.

68787576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 68787576 is about 8293.8275844148. The cubic root of 68787576 is about 409.7352564126.

The spelling of 68787576 in words is "sixty-eight million, seven hundred eighty-seven thousand, five hundred seventy-six".