68396401 has 4 divisors (see below), whose sum is σ = 69333412. Its totient is φ = 67459392.

The previous prime is 68396381. The next prime is 68396417. The reversal of 68396401 is 10469386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10469386 = 2 ⋅5234693.

It can be written as a sum of positive squares in 2 ways, for example, as 23184225 + 45212176 = 4815^2 + 6724^2 .

It is a cyclic number.

It is not a de Polignac number, because 68396401 - 2⁵ = 68396369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68390401) 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, 468396 + ... + 468541.

It is an arithmetic number, because the mean of its divisors is an integer number (17333353).

Almost surely, 2^68396401 is an apocalyptic number.

It is an amenable number.

68396401 is a deficient number, since it is larger than the sum of its proper divisors (937011).

68396401 is an equidigital number, since it uses as much as digits as its factorization.

68396401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937010.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68396401 is about 8270.2116659732. The cubic root of 68396401 is about 408.9570976215.

The spelling of 68396401 in words is "sixty-eight million, three hundred ninety-six thousand, four hundred one".