67979250 has 112 divisors (see below), whose sum is σ = 191309976. Its totient is φ = 18079200.

The previous prime is 67979227. The next prime is 67979251. The reversal of 67979250 is 5297976.

It can be written as a sum of positive squares in 4 ways, for example, as 21316689 + 46662561 = 4617^2 + 6831^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 67979196 and 67979205.

It is not an unprimeable number, because it can be changed into a prime (67979251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 182064 + ... + 182436.

Almost surely, 2^67979250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67979250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95654988).

67979250 is an abundant number, since it is smaller than the sum of its proper divisors (123330726).

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

67979250 is an equidigital number, since it uses as much as digits as its factorization.

67979250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 67979250 is about 8244.9530016853. The cubic root of 67979250 is about 408.1239891331.

The spelling of 67979250 in words is "sixty-seven million, nine hundred seventy-nine thousand, two hundred fifty".