67491248 has 80 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 29145600.

The previous prime is 67491239. The next prime is 67491257. The reversal of 67491248 is 84219476.

It is an interprime number because it is at equal distance from previous prime (67491239) and next prime (67491257).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339053 + ... + 339251.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^67491248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67491248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74995200).

67491248 is an abundant number, since it is smaller than the sum of its proper divisors (82499152).

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

67491248 is a wasteful number, since it uses less digits than its factorization.

67491248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 67491248 is about 8215.3057155531. The cubic root of 67491248 is about 407.1450442597.

It can be divided in two parts, 6749 and 1248, that added together give a palindrome (7997).

The spelling of 67491248 in words is "sixty-seven million, four hundred ninety-one thousand, two hundred forty-eight".