67400740 has 24 divisors (see below), whose sum is σ = 154409472. Its totient is φ = 24509280.

The previous prime is 67400713. The next prime is 67400743. The reversal of 67400740 is 4700476.

It is a junction number, because it is equal to n+sod(n) for n = 67400699 and 67400708.

It is not an unprimeable number, because it can be changed into a prime (67400743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152964 + ... + 153403.

It is an arithmetic number, because the mean of its divisors is an integer number (6433728).

Almost surely, 2^67400740 is an apocalyptic number.

It is an amenable number.

67400740 is an abundant number, since it is smaller than the sum of its proper divisors (87008732).

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

67400740 is a wasteful number, since it uses less digits than its factorization.

67400740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306387 (or 306385 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 67400740 is about 8209.7953689480. The cubic root of 67400740 is about 406.9629645119.

The spelling of 67400740 in words is "sixty-seven million, four hundred thousand, seven hundred forty".