68728762 has 8 divisors (see below), whose sum is σ = 103166676. Its totient is φ = 34339872.

The previous prime is 68728741. The next prime is 68728763. The reversal of 68728762 is 26782786.

It can be written as a sum of positive squares in 2 ways, for example, as 65302561 + 3426201 = 8081^2 + 1851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68728763) 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, 8523 + ... + 14494.

Almost surely, 2^68728762 is an apocalyptic number.

68728762 is a deficient number, since it is larger than the sum of its proper divisors (34437914).

68728762 is a wasteful number, since it uses less digits than its factorization.

68728762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24512.

The product of its digits is 451584, while the sum is 46.

The square root of 68728762 is about 8290.2811773787. The cubic root of 68728762 is about 409.6184473312.

The spelling of 68728762 in words is "sixty-eight million, seven hundred twenty-eight thousand, seven hundred sixty-two".