68291641 has 4 divisors (see below), whose sum is σ = 74499984. Its totient is φ = 62083300.

The previous prime is 68291633. The next prime is 68291651. The reversal of 68291641 is 14619286.

It is a happy number.

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 68291641 - 2³ = 68291633 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 68291641.

It is not an unprimeable number, because it can be changed into a prime (68291651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104155 + ... + 3104176.

It is an arithmetic number, because the mean of its divisors is an integer number (18624996).

Almost surely, 2^68291641 is an apocalyptic number.

It is an amenable number.

68291641 is a deficient number, since it is larger than the sum of its proper divisors (6208343).

68291641 is a wasteful number, since it uses less digits than its factorization.

68291641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208342.

The product of its digits is 20736, while the sum is 37.

The square root of 68291641 is about 8263.8756646019. The cubic root of 68291641 is about 408.7481965836.

The spelling of 68291641 in words is "sixty-eight million, two hundred ninety-one thousand, six hundred forty-one".