68490697 has 4 divisors (see below), whose sum is σ = 74717136. Its totient is φ = 62264260.

The previous prime is 68490691. The next prime is 68490707. The reversal of 68490697 is 79609486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68490697 - 2¹¹ = 68488649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68490697.

It is not an unprimeable number, because it can be changed into a prime (68490691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113203 + ... + 3113224.

It is an arithmetic number, because the mean of its divisors is an integer number (18679284).

Almost surely, 2^68490697 is an apocalyptic number.

It is an amenable number.

68490697 is a deficient number, since it is larger than the sum of its proper divisors (6226439).

68490697 is a wasteful number, since it uses less digits than its factorization.

68490697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226438.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 68490697 is about 8275.9106447569. The cubic root of 68490697 is about 409.1449501478.

The spelling of 68490697 in words is "sixty-eight million, four hundred ninety thousand, six hundred ninety-seven".