67961849 has 4 divisors (see below), whose sum is σ = 70916736. Its totient is φ = 65006964.

The previous prime is 67961833. The next prime is 67961857. The reversal of 67961849 is 94816976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67961849 - 2⁴ = 67961833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67961797 and 67961806.

It is not an unprimeable number, because it can be changed into a prime (67961809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477409 + ... + 1477454.

It is an arithmetic number, because the mean of its divisors is an integer number (17729184).

Almost surely, 2^67961849 is an apocalyptic number.

It is an amenable number.

67961849 is a deficient number, since it is larger than the sum of its proper divisors (2954887).

67961849 is a wasteful number, since it uses less digits than its factorization.

67961849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954886.

The product of its digits is 653184, while the sum is 50.

The square root of 67961849 is about 8243.8976825286. The cubic root of 67961849 is about 408.0891629591.

The spelling of 67961849 in words is "sixty-seven million, nine hundred sixty-one thousand, eight hundred forty-nine".