67040040 has 64 divisors (see below), whose sum is σ = 201749760. Its totient is φ = 17821440.

The previous prime is 67040023. The next prime is 67040059. The reversal of 67040040 is 4004076.

It is a junction number, because it is equal to n+sod(n) for n = 67039989 and 67040016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49857 + ... + 51183.

It is an arithmetic number, because the mean of its divisors is an integer number (3152340).

Almost surely, 2^67040040 is an apocalyptic number.

67040040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67040040 is an abundant number, since it is smaller than the sum of its proper divisors (134709720).

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

67040040 is a wasteful number, since it uses less digits than its factorization.

67040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 67040040 is about 8187.7982388430. The cubic root of 67040040 is about 406.2357015875.

The spelling of 67040040 in words is "sixty-seven million, forty thousand, forty".