68857756 has 12 divisors (see below), whose sum is σ = 131455800. Its totient is φ = 31298960.

The previous prime is 68857751. The next prime is 68857757. The reversal of 68857756 is 65775886.

It is a super-2 number, since 2×68857756² = 9482781122711072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68857751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782431 + ... + 782518.

It is an arithmetic number, because the mean of its divisors is an integer number (10954650).

Almost surely, 2^68857756 is an apocalyptic number.

It is an amenable number.

68857756 is a deficient number, since it is larger than the sum of its proper divisors (62598044).

68857756 is a wasteful number, since it uses less digits than its factorization.

68857756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564964 (or 1564962 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 68857756 is about 8298.0573630218. The cubic root of 68857756 is about 409.8745521421.

It can be divided in two parts, 6885 and 7756, that added together give a palindrome (14641).

The spelling of 68857756 in words is "sixty-eight million, eight hundred fifty-seven thousand, seven hundred fifty-six".