67748157 has 28 divisors (see below), whose sum is σ = 102304800. Its totient is φ = 44842248.

The previous prime is 67748143. The next prime is 67748159. The reversal of 67748157 is 75184776.

It is not a de Polignac number, because 67748157 - 2⁴ = 67748141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67748159) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 144838 + ... + 145304.

Almost surely, 2^67748157 is an apocalyptic number.

It is an amenable number.

67748157 is a deficient number, since it is larger than the sum of its proper divisors (34556643).

67748157 is an equidigital number, since it uses as much as digits as its factorization.

67748157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 669 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 67748157 is about 8230.9268615387. The cubic root of 67748157 is about 407.6609965173.

The spelling of 67748157 in words is "sixty-seven million, seven hundred forty-eight thousand, one hundred fifty-seven".