68641700 has 18 divisors (see below), whose sum is σ = 148952706. Its totient is φ = 27456640.

The previous prime is 68641691. The next prime is 68641711. The reversal of 68641700 is 714686.

It can be written as a sum of positive squares in 3 ways, for example, as 50176 + 68591524 = 224^2 + 8282^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 343109 + ... + 343308.

Almost surely, 2^68641700 is an apocalyptic number.

It is an amenable number.

68641700 is an abundant number, since it is smaller than the sum of its proper divisors (80311006).

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

68641700 is a wasteful number, since it uses less digits than its factorization.

68641700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686431 (or 686424 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 68641700 is about 8285.0286662147. The cubic root of 68641700 is about 409.4454131741.

The spelling of 68641700 in words is "sixty-eight million, six hundred forty-one thousand, seven hundred".