67378628 has 12 divisors (see below), whose sum is σ = 121099692. Its totient is φ = 32778720.

The previous prime is 67378627. The next prime is 67378637. The reversal of 67378628 is 82687376.

It can be written as a sum of positive squares in 2 ways, for example, as 55323844 + 12054784 = 7438^2 + 3472^2 .

It is a super-2 number, since 2×67378628² = 9079759022324768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67378627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227483 + ... + 227778.

It is an arithmetic number, because the mean of its divisors is an integer number (10091641).

Almost surely, 2^67378628 is an apocalyptic number.

It is an amenable number.

67378628 is a deficient number, since it is larger than the sum of its proper divisors (53721064).

67378628 is a wasteful number, since it uses less digits than its factorization.

67378628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455302 (or 455300 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 67378628 is about 8208.4485744871. The cubic root of 67378628 is about 406.9184558546.

The spelling of 67378628 in words is "sixty-seven million, three hundred seventy-eight thousand, six hundred twenty-eight".