67400398 has 16 divisors (see below), whose sum is σ = 109438560. Its totient is φ = 30947616.

The previous prime is 67400387. The next prime is 67400407. The reversal of 67400398 is 89300476.

It is a congruent number.

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, 1458 + ... + 11701.

It is an arithmetic number, because the mean of its divisors is an integer number (6839910).

Almost surely, 2^67400398 is an apocalyptic number.

67400398 is a deficient number, since it is larger than the sum of its proper divisors (42038162).

67400398 is a wasteful number, since it uses less digits than its factorization.

67400398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13371.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 67400398 is about 8209.7745401442. The cubic root of 67400398 is about 406.9622761833.

The spelling of 67400398 in words is "sixty-seven million, four hundred thousand, three hundred ninety-eight".