68695720 has 16 divisors (see below), whose sum is σ = 154565460. Its totient is φ = 27478272.

The previous prime is 68695709. The next prime is 68695763. The reversal of 68695720 is 2759686.

It can be written as a sum of positive squares in 2 ways, for example, as 63776196 + 4919524 = 7986^2 + 2218^2 .

It is a super-4 number, since 4×68695720⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858657 + ... + 858736.

Almost surely, 2^68695720 is an apocalyptic number.

It is an amenable number.

68695720 is an abundant number, since it is smaller than the sum of its proper divisors (85869740).

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

68695720 is a wasteful number, since it uses less digits than its factorization.

68695720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717404 (or 1717400 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 68695720 is about 8288.2881224050. The cubic root of 68695720 is about 409.5527941661.

The spelling of 68695720 in words is "sixty-eight million, six hundred ninety-five thousand, seven hundred twenty".