67478346 has 60 divisors (see below), whose sum is σ = 163747122. Its totient is φ = 20646576.

The previous prime is 67478339. The next prime is 67478347. The reversal of 67478346 is 64387476.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 2595321 = 8055^2 + 1611^2 .

It is not an unprimeable number, because it can be changed into a prime (67478347) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 376885 + ... + 377063.

Almost surely, 2^67478346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67478346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81873561).

67478346 is an abundant number, since it is smaller than the sum of its proper divisors (96268776).

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

67478346 is a wasteful number, since it uses less digits than its factorization.

67478346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 197 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 67478346 is about 8214.5204363980. The cubic root of 67478346 is about 407.1190985740.

The spelling of 67478346 in words is "sixty-seven million, four hundred seventy-eight thousand, three hundred forty-six".