68220532 has 12 divisors (see below), whose sum is σ = 122162656. Its totient is φ = 33316920.

The previous prime is 68220521. The next prime is 68220569. The reversal of 68220532 is 23502286.

It is a self number, because there is not a number n which added to its sum of digits gives 68220532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198144 + ... + 198487.

Almost surely, 2^68220532 is an apocalyptic number.

It is an amenable number.

68220532 is a deficient number, since it is larger than the sum of its proper divisors (53942124).

68220532 is a wasteful number, since it uses less digits than its factorization.

68220532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396678 (or 396676 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 68220532 is about 8259.5721438825. The cubic root of 68220532 is about 408.6062769714.

The spelling of 68220532 in words is "sixty-eight million, two hundred twenty thousand, five hundred thirty-two".