68432477 has 2 divisors, whose sum is σ = 68432478. Its totient is φ = 68432476.

The previous prime is 68432473. The next prime is 68432503. The reversal of 68432477 is 77423486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68244121 + 188356 = 8261^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 68432477 - 2² = 68432473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68432473) 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 as a sum of consecutive naturals, namely, 34216238 + 34216239.

It is an arithmetic number, because the mean of its divisors is an integer number (34216239).

Almost surely, 2^68432477 is an apocalyptic number.

It is an amenable number.

68432477 is a deficient number, since it is larger than the sum of its proper divisors (1).

68432477 is an equidigital number, since it uses as much as digits as its factorization.

68432477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 41.

The square root of 68432477 is about 8272.3924592587. The cubic root of 68432477 is about 409.0289870916.

The spelling of 68432477 in words is "sixty-eight million, four hundred thirty-two thousand, four hundred seventy-seven".