68638146 has 64 divisors (see below), whose sum is σ = 154897920. Its totient is φ = 20148480.

The previous prime is 68638133. The next prime is 68638153. The reversal of 68638146 is 64183686.

It is a happy number.

It is a super-2 number, since 2×68638146² = 9422390172634632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68638098 and 68638107.

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, 207201 + ... + 207531.

It is an arithmetic number, because the mean of its divisors is an integer number (2420280).

Almost surely, 2^68638146 is an apocalyptic number.

68638146 is an abundant number, since it is smaller than the sum of its proper divisors (86259774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68638146 is a wasteful number, since it uses less digits than its factorization.

68638146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its digits is 165888, while the sum is 42.

The square root of 68638146 is about 8284.8141801733. The cubic root of 68638146 is about 409.4383465557.

The spelling of 68638146 in words is "sixty-eight million, six hundred thirty-eight thousand, one hundred forty-six".