67481145 has 24 divisors (see below), whose sum is σ = 117753792. Its totient is φ = 35748000.

The previous prime is 67481119. The next prime is 67481209. The reversal of 67481145 is 54118476.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-67481145 is a prime.

It is a super-2 number, since 2×67481145² = 9107409861022050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1830 + ... + 11760.

It is an arithmetic number, because the mean of its divisors is an integer number (4906408).

Almost surely, 2^67481145 is an apocalyptic number.

It is an amenable number.

67481145 is a deficient number, since it is larger than the sum of its proper divisors (50272647).

67481145 is a wasteful number, since it uses less digits than its factorization.

67481145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093 (or 10090 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 67481145 is about 8214.6908036761. The cubic root of 67481145 is about 407.1247275927.

The spelling of 67481145 in words is "sixty-seven million, four hundred eighty-one thousand, one hundred forty-five".