68437897 has 16 divisors (see below), whose sum is σ = 78281280. Its totient is φ = 59270400.

The previous prime is 68437877. The next prime is 68437909. The reversal of 68437897 is 79873486.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68437897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68437807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17629 + ... + 21157.

It is an arithmetic number, because the mean of its divisors is an integer number (4892580).

Almost surely, 2^68437897 is an apocalyptic number.

It is an amenable number.

68437897 is a deficient number, since it is larger than the sum of its proper divisors (9843383).

68437897 is a wasteful number, since it uses less digits than its factorization.

68437897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its digits is 2032128, while the sum is 52.

The square root of 68437897 is about 8272.7200484484. The cubic root of 68437897 is about 409.0397854662.

The spelling of 68437897 in words is "sixty-eight million, four hundred thirty-seven thousand, eight hundred ninety-seven".