68659497 has 12 divisors (see below), whose sum is σ = 100158084. Its totient is φ = 45319200.

The previous prime is 68659471. The next prime is 68659499. The reversal of 68659497 is 79495686.

It can be written as a sum of positive squares in 2 ways, for example, as 57927321 + 10732176 = 7611^2 + 3276^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68659497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68659499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36858 + ... + 38675.

It is an arithmetic number, because the mean of its divisors is an integer number (8346507).

Almost surely, 2^68659497 is an apocalyptic number.

It is an amenable number.

68659497 is a deficient number, since it is larger than the sum of its proper divisors (31498587).

68659497 is a wasteful number, since it uses less digits than its factorization.

68659497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75640 (or 75637 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 68659497 is about 8286.1026423766. The cubic root of 68659497 is about 409.4807962835.

The spelling of 68659497 in words is "sixty-eight million, six hundred fifty-nine thousand, four hundred ninety-seven".