67998930 has 16 divisors (see below), whose sum is σ = 163197504. Its totient is φ = 18133040.

The previous prime is 67998923. The next prime is 67998941. The reversal of 67998930 is 3989976.

It is a super-2 number, since 2×67998930² = 9247708962289800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1133286 + ... + 1133345.

It is an arithmetic number, because the mean of its divisors is an integer number (10199844).

Almost surely, 2^67998930 is an apocalyptic number.

67998930 is an abundant number, since it is smaller than the sum of its proper divisors (95198574).

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

67998930 is a wasteful number, since it uses less digits than its factorization.

67998930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266641.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 67998930 is about 8246.1463727004. The cubic root of 67998930 is about 408.1633693124.

The spelling of 67998930 in words is "sixty-seven million, nine hundred ninety-eight thousand, nine hundred thirty".