67378641 has 16 divisors (see below), whose sum is σ = 98426880. Its totient is φ = 40659920.

The previous prime is 67378639. The next prime is 67378651. The reversal of 67378641 is 14687376.

It is a cyclic number.

It is not a de Polignac number, because 67378641 - 2¹ = 67378639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67378593 and 67378602.

It is not an unprimeable number, because it can be changed into a prime (67378651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3616 + ... + 12158.

It is an arithmetic number, because the mean of its divisors is an integer number (6151680).

Almost surely, 2^67378641 is an apocalyptic number.

It is an amenable number.

67378641 is a deficient number, since it is larger than the sum of its proper divisors (31048239).

67378641 is a wasteful number, since it uses less digits than its factorization.

67378641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796.

The product of its digits is 169344, while the sum is 42.

The square root of 67378641 is about 8208.4493663542. The cubic root of 67378641 is about 406.9184820248.

The spelling of 67378641 in words is "sixty-seven million, three hundred seventy-eight thousand, six hundred forty-one".