68021372 has 12 divisors (see below), whose sum is σ = 119175000. Its totient is φ = 33971376.

The previous prime is 68021339. The next prime is 68021377. The reversal of 68021372 is 27312086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68021377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5747 + ... + 13002.

It is an arithmetic number, because the mean of its divisors is an integer number (9931250).

Almost surely, 2^68021372 is an apocalyptic number.

It is an amenable number.

68021372 is a deficient number, since it is larger than the sum of its proper divisors (51153628).

68021372 is a wasteful number, since it uses less digits than its factorization.

68021372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19660 (or 19658 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 68021372 is about 8247.5070172750. The cubic root of 68021372 is about 408.2082670523.

The spelling of 68021372 in words is "sixty-eight million, twenty-one thousand, three hundred seventy-two".