68647750 has 16 divisors (see below), whose sum is σ = 128509056. Its totient is φ = 27459000.

The previous prime is 68647721. The next prime is 68647757. The reversal of 68647750 is 5774686.

It is a junction number, because it is equal to n+sod(n) for n = 68647697 and 68647706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68647757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137046 + ... + 137545.

It is an arithmetic number, because the mean of its divisors is an integer number (8031816).

Almost surely, 2^68647750 is an apocalyptic number.

68647750 is a deficient number, since it is larger than the sum of its proper divisors (59861306).

68647750 is a wasteful number, since it uses less digits than its factorization.

68647750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274608 (or 274598 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 68647750 is about 8285.3937745891. The cubic root of 68647750 is about 409.4574421690.

The spelling of 68647750 in words is "sixty-eight million, six hundred forty-seven thousand, seven hundred fifty".