68806501 has 6 divisors (see below), whose sum is σ = 71928710. Its totient is φ = 65814408.

The previous prime is 68806499. The next prime is 68806511. The reversal of 68806501 is 10560886.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64802500 + 4004001 = 8050^2 + 2001^2 .

It is not a de Polignac number, because 68806501 - 2¹ = 68806499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68806511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64506 + ... + 65563.

Almost surely, 2^68806501 is an apocalyptic number.

It is an amenable number.

68806501 is a deficient number, since it is larger than the sum of its proper divisors (3122209).

68806501 is a wasteful number, since it uses less digits than its factorization.

68806501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130115 (or 130092 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 68806501 is about 8294.9684146475. The cubic root of 68806501 is about 409.7728287436.

The spelling of 68806501 in words is "sixty-eight million, eight hundred six thousand, five hundred one".