68424646 has 4 divisors (see below), whose sum is σ = 102636972. Its totient is φ = 34212322.

The previous prime is 68424637. The next prime is 68424647. The reversal of 68424646 is 64642486.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 68424599 and 68424608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68424647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17106160 + ... + 17106163.

It is an arithmetic number, because the mean of its divisors is an integer number (25659243).

Almost surely, 2^68424646 is an apocalyptic number.

68424646 is a deficient number, since it is larger than the sum of its proper divisors (34212326).

68424646 is a wasteful number, since it uses less digits than its factorization.

68424646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34212325.

The product of its digits is 221184, while the sum is 40.

The square root of 68424646 is about 8271.9191243629. The cubic root of 68424646 is about 409.0133842261.

The spelling of 68424646 in words is "sixty-eight million, four hundred twenty-four thousand, six hundred forty-six".