68638435 has 8 divisors (see below), whose sum is σ = 87211296. Its totient is φ = 51680640.

The previous prime is 68638403. The next prime is 68638457. The reversal of 68638435 is 53483686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68638435 - 2⁵ = 68638403 is a prime.

It is a super-2 number, since 2×68638435² = 9422469518498450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68638391 and 68638400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403671 + ... + 403840.

It is an arithmetic number, because the mean of its divisors is an integer number (10901412).

Almost surely, 2^68638435 is an apocalyptic number.

68638435 is a deficient number, since it is larger than the sum of its proper divisors (18572861).

68638435 is a wasteful number, since it uses less digits than its factorization.

68638435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807533.

The product of its digits is 414720, while the sum is 43.

The square root of 68638435 is about 8284.8316217048. The cubic root of 68638435 is about 409.4389211998.

The spelling of 68638435 in words is "sixty-eight million, six hundred thirty-eight thousand, four hundred thirty-five".