67400000 has 84 divisors (see below), whose sum is σ = 167668956. Its totient is φ = 26880000.

The previous prime is 67399999. The next prime is 67400009. The reversal of 67400000 is 476.

It can be written as a sum of positive squares in 6 ways, for example, as 61089856 + 6310144 = 7816^2 + 2512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67400009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199832 + ... + 200168.

It is an arithmetic number, because the mean of its divisors is an integer number (1996059).

Almost surely, 2^67400000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83834478).

67400000 is an abundant number, since it is smaller than the sum of its proper divisors (100268956).

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

67400000 is an frugal number, since it uses more digits than its factorization.

67400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 67400000 is about 8209.7503007095. The cubic root of 67400000 is about 406.9614751430.

Adding to 67400000 its reverse (476), we get a palindrome (67400476).

The spelling of 67400000 in words is "sixty-seven million, four hundred thousand".