68612404897 has 4 divisors (see below), whose sum is σ = 71595552960. Its totient is φ = 65629256836.

The previous prime is 68612404891. The next prime is 68612404901. The reversal of 68612404897 is 79840421686.

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 68612404897 - 2⁷ = 68612404769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68612404891) 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, 1491573997 + ... + 1491574042.

It is an arithmetic number, because the mean of its divisors is an integer number (17898888240).

Almost surely, 2^68612404897 is an apocalyptic number.

It is an amenable number.

68612404897 is a deficient number, since it is larger than the sum of its proper divisors (2983148063).

68612404897 is a wasteful number, since it uses less digits than its factorization.

68612404897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983148062.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 68612404897 in words is "sixty-eight billion, six hundred twelve million, four hundred four thousand, eight hundred ninety-seven".