68643435 has 32 divisors (see below), whose sum is σ = 129853440. Its totient is φ = 30296448.

The previous prime is 68643401. The next prime is 68643451. The reversal of 68643435 is 53434686.

68643435 = T₁₉₆₃ + T₁₉₆₄ + ... + T₁₉₉₇.

It is not a de Polignac number, because 68643435 - 2¹¹ = 68641387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68643393 and 68643402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8227 + ... + 14316.

It is an arithmetic number, because the mean of its divisors is an integer number (4057920).

Almost surely, 2^68643435 is an apocalyptic number.

68643435 is a deficient number, since it is larger than the sum of its proper divisors (61210005).

68643435 is a wasteful number, since it uses less digits than its factorization.

68643435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22587.

The product of its digits is 207360, while the sum is 39.

The square root of 68643435 is about 8285.1333724932. The cubic root of 68643435 is about 409.4488628838.

The spelling of 68643435 in words is "sixty-eight million, six hundred forty-three thousand, four hundred thirty-five".