68259997 has 8 divisors (see below), whose sum is σ = 76046040. Its totient is φ = 60836160.

The previous prime is 68259973. The next prime is 68260001. The reversal of 68259997 is 79995286.

It can be written as a sum of positive squares in 4 ways, for example, as 9369721 + 58890276 = 3061^2 + 7674^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68259997 - 2⁷ = 68259869 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 (68259907) 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, 90154 + ... + 90907.

It is an arithmetic number, because the mean of its divisors is an integer number (9505755).

Almost surely, 2^68259997 is an apocalyptic number.

It is an amenable number.

68259997 is a deficient number, since it is larger than the sum of its proper divisors (7786043).

68259997 is a wasteful number, since it uses less digits than its factorization.

68259997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181103.

The product of its digits is 2449440, while the sum is 55.

The square root of 68259997 is about 8261.9608447390. The cubic root of 68259997 is about 408.6850535397.

It can be divided in two parts, 682599 and 97, that added together give a triangular number (682696 = T₁₁₆₈).

The spelling of 68259997 in words is "sixty-eight million, two hundred fifty-nine thousand, nine hundred ninety-seven".