68664435 has 48 divisors (see below), whose sum is σ = 129182976. Its totient is φ = 31050432.

The previous prime is 68664413. The next prime is 68664437. The reversal of 68664435 is 53446686.

It is not a de Polignac number, because 68664435 - 2⁵ = 68664403 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68664437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75252 + ... + 76158.

It is an arithmetic number, because the mean of its divisors is an integer number (2691312).

Almost surely, 2^68664435 is an apocalyptic number.

68664435 is a deficient number, since it is larger than the sum of its proper divisors (60518541).

68664435 is a wasteful number, since it uses less digits than its factorization.

68664435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1025 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 68664435 is about 8286.4006058119. The cubic root of 68664435 is about 409.4906126857.

The spelling of 68664435 in words is "sixty-eight million, six hundred sixty-four thousand, four hundred thirty-five".