67981402 has 16 divisors (see below), whose sum is σ = 108801792. Its totient is φ = 31744960.

The previous prime is 67981391. The next prime is 67981421. The reversal of 67981402 is 20418976.

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, 3178 + ... + 12085.

It is an arithmetic number, because the mean of its divisors is an integer number (6800112).

Almost surely, 2^67981402 is an apocalyptic number.

67981402 is a deficient number, since it is larger than the sum of its proper divisors (40820390).

67981402 is a wasteful number, since it uses less digits than its factorization.

67981402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15413.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 67981402 is about 8245.0835047318. The cubic root of 67981402 is about 408.1282957098.

The spelling of 67981402 in words is "sixty-seven million, nine hundred eighty-one thousand, four hundred two".